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Diagnostic Trouble Code (DTC) Charts

WARNING: This page is about a different car, the 2008 Lincoln Navigator L and 2008 Lincoln Navigator. However, it is still accessible from the selected car via links, so may be relevant.
Special Tools

Illustration Tool Name Tool Number
GF0000049Courtesy of FORD MOTOR CO.
 Vehicle Communication Module (VCM) and Integrated Diagnostic System (IDS) software with appropriate hardware, or equivalent scan tool  
DTC CHART

Five Digit DTC Component Description Condition Symptom Action
P0218 Transmission Fluid Temperature (TFT) Transmission fluid over temperature condition. Transmission control module (TCM) has detected a TFT that has exceeded a set temperature. Aggressive lock up schedule. Carry out normal diagnostic for an overheating condition. Refer to Diagnosis By Symptom .
P0219 PCM Engine speed signal on controller area network (CAN) too high. Engine speed signal on CAN too high.
  • May turn on malfunction indicator lamp (MIL)
  • Only 5th Gear
  • Torque converter clutch (TCC) will not engage
 Clear all DTCs. Test the system for normal operation. If the DTC returns, refer to the Introduction - Gasoline Engines article.
P0562 Battery System voltage low. TCM has detected a voltage level below minimum voltage to operate solenoids. Maintains current solenoid state.
  • No engagements
  • No adaptive strategy
  • No self learning strategy
  • May turn on MIL
  • Mechanical limp-home mode
  • Battery voltage below 9 volts
 Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart  and the Introduction - Gasoline Engines article.
P0563 Battery System voltage high. TCM has detected a voltage level above maximum voltage.
  • No adaptive strategy
  • No self learning strategy
  • May turn on MIL
  • Mechanical limp-home mode
  • Battery voltage above 16 volts
 Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart  and the Introduction - Gasoline Engines article.
P0603 TCM TCM electronically erasable programmable read only memory (EEPROM) error. TCM has detected an internal software concern with keep alive memory (KAM). - Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all DTCs. Test the system for normal operation. If the DTC returns, install a new mechatronics unit. After installing the new mechatronics unit, it must be reflashed to the latest level calibration.
P0605 TCM The TCM read only memory (ROM) has been corrupted. TCM has detected an internal software concern with ROM.
  • May turn on MIL
  • Mechanical limp-home mode
 Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all DTCs. Test the system for normal operation. If the DTC returns, install a new mechatronics unit. After installing the new mechatronics unit, it must be reflashed to the latest level calibration.
P0613 TCM TCM processor. TCM has detected an internal software issue.
  • May turn on MIL
  • Mechanical limp-home mode
 Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all DTCs. Test the system for normal operation. If the DTC returns, install a new mechatronics unit. After installing the new mechatronics unit, it must be reflashed to the latest level calibration.
P062F TCM TCM erasable programmable read-only memory (EPROM) error. Internal TCM error with EPROM.
  • May turn on MIL
  • Mechanical limp-home mode
 CLEAR all DTCs. TEST the system for normal operation. If the DTC returns, install a new mechatronics unit. After installing the new mechatronics unit, it must be reflashed to the latest level calibration.
P0634 TCM TCM module temperature. Internal temperature within TCM too high.
  • May turn on MIL
  • Mechanical limp-home mode
  • Default to 3rd or 5th gear
 Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all DTCs. Test the system for normal operation. If the DTC returns, install a new mechatronics unit. After installing the new mechatronics unit, it must be reflashed to the latest level calibration.
P0641 TCM TCM module sensor voltage failed. Sensor reference voltage A circuit open.
  • May turn on MIL
  • Mechanical limp-home mode
 Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all DTCs. Test the system for normal operation. If the DTC returns, install a new mechatronics unit. After installing the new mechatronics unit, it must be reflashed to the latest level calibration.
P0657 TCM Actuator supply voltage A circuit open. Power supply actuators open circuit.
  • May turn on MIL
  • Mechanical limp-home mode
 Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all DTCs. Test the system for normal operation. If the DTC returns, install a new mechatronics unit. After installing the new mechatronics unit, it must be reflashed to the latest level calibration.
P0658 TCM Actuator supply voltage A circuit low. Power supply actuators short circuit to ground.
  • May turn on MIL
  • Mechanical limp-home mode
 Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all DTCs. Test the system for normal operation. If the DTC returns, install a new mechatronics unit. After installing the new mechatronics unit, it must be reflashed to the latest level calibration.
P0659 TCM Actuator supply voltage A circuit high. Actuator power supply short circuit to power before key ON.
  • May turn on MIL
  • Mechanical limp-home mode
 Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all DTCs. Test the system for normal operation. If the DTC returns, install a new mechatronics unit. After installing the new mechatronics unit, it must be reflashed to the latest level calibration.
P0667 TCM-TFT PCM, engine control module (ECM), TCM internal temperature sensor range operation. Substrate temperature sensor.
  • Transmission will shut down or will not shift due to a transmission fluid over temperature condition
  • May turn on MIL
 Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all DTCs. Test the system for normal operation. If the DTC returns, install a new mechatronics unit. After installing the new mechatronics unit, it must be reflashed to the latest level calibration.
P0701 Transmission Control System Transmission control system. Range operation. TCM has detected a concern with the operational strategy.
  • Dual DTC code causing transmission default to a hydraulic limp-home mode
  • May turn on MIL
  • Mechanical limp-home mode
 Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all DTCs. Test the system for normal operation. Reflash the TCM first. If the DTC returns, install a new mechatronics unit. After installing the new mechatronics unit, it must be reflashed to the latest level calibration.
P0705 Transmission Range (TR) Sensor TR sensor circuit error. TCM has detected a TR signal (P, R, N, D, 3, 2 or 1) is out of normal range.
  • May turn on MIL
  • Mechanical limp-home mode
 Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all DTCs. Test the system for normal operation. If the DTC returns, install a new mechatronics unit. After installing the new mechatronics unit, it must be reflashed to the latest level calibration.
P0711 TFT Sensor No change in TFT during operation. PCM has detected no TFT change during operation. TFT valve stuck at some normal reading.
  • Firm shift
  • May turn on MIL
 Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all DTCs. Test the system for normal operation. If the DTC returns, install a new mechatronics unit. After installing the new mechatronics unit, it must be reflashed to the latest level calibration.
P0712 TFT Sensor TFT sensor circuit grounded. PCM has detected a voltage drop across TFT sensor, exceeds scale set for temperature (grounded circuit).
  • Firm shift
  • May turn on MIL
 Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all DTCs. Test the system for normal operation. If the DTC returns, install a new mechatronics unit. After installing the new mechatronics unit, it must be reflashed to the latest level calibration.
P0713 TFT Sensor TFT sensor circuit short to power. TCM has detected a voltage drop across TFT sensor, exceeds scale set for temperature. - Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all DTCs. Test the system for normal operation. If the DTC returns, install a new mechatronics unit. After installing the new mechatronics unit, it must be reflashed to the latest level calibration.
P0714 TFT Sensor TFT intermittent error. TCM has detected no TFT intermittent operation. - Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all DTCs. Test the system for normal operation. If the DTC returns, install a new mechatronics unit. After installing the new mechatronics unit, it must be reflashed to the latest level calibration.
P0715 Turbine Shaft Speed (TSS) Sensor TSS sensor circuit error. TSS has detected a short circuit to power.
  • No torque converter clutch (TCC) engagements
  • May turn on MIL
  • Mechanical limp-home mode in 3rd gear
  • Max line pressure
  • No adaptive learning strategy
  • Automatic mode only
 Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all DTCs. Test the system for normal operation. If the DTC returns, install a new mechatronics unit. After installing the new mechatronics unit, it must be reflashed to the latest level calibration.
P0716 TSS Sensor TSS range or operation insufficient input from TSS. PCM has detected a loss or noisy TSS signal during operation.
  • No TCC engagements
  • May turn on MIL
  • Mechanical limp-home mode in 3rd gear
  • Max line pressure
  • No adaptive learning strategy
  • Automatic mode only
 Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all DTCs. Test the system for normal operation. If the DTC returns, install a new mechatronics unit. After installing the new mechatronics unit, it must be reflashed to the latest level calibration.
P0717 TSS Sensor No TSS signal. PCM has not detected a TSS signal. No TSS signal when output shaft speed (OSS) signal is present.
  • No TCC engagements
  • May turn on MIL
  • Mechanical limp-home mode in 3rd gear
  • Max line pressure
  • No adaptive learning strategy
  • Automatic mode only
 Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all DTCs. Test the system for normal operation. If the DTC returns, install a new mechatronics unit. After installing the new mechatronics unit, it must be reflashed to the latest level calibration.
P0720 OSS Sensor No OSS signal. PCM has detected an OSS short circuit to power.
  • No TCC engagements
  • Substitute wheel speed for OSS
  • No adaptive learning strategy
 Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all DTCs. Test the system for normal operation. If the DTC returns, install a new mechatronics unit. After installing the new mechatronics unit, it must be reflashed to the latest level calibration.
P0721 OSS Sensor OSS range or operation insufficient input from OSS. PCM has detected a loss or noisy OSS signal during operation.
  • Harsh shifts
  • Substitute wheel speed for OSS
  • No adaptive learning strategy
 Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all DTCs. Test the system for normal operation. If the DTC returns, install a new mechatronics unit. After installing the new mechatronics unit, it must be reflashed to the latest level calibration.
P0722 OSS Sensor No OSS signal. PCM has not detected an OSS signal. No OSS signal when OSS signal is present.
  • Harsh shifts
  • Substitute wheel speed for OSS
  • No adaptive learning strategy
 Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all DTCs. Test the system for normal operation. If the DTC returns, install a new mechatronics unit. After installing the new mechatronics unit, it must be reflashed to the latest level calibration.
P0723 OSS Sensor No OSS signal intermittent. PCM has detected an intermittent signal.
  • Harsh shifts
  • No TCC engagements
  • Hold in gear currently selected
  • Max line pressure
  • No adaptive learning strategy
  • May turn on MIL
 Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all DTCs. Test the system for normal operation. If the DTC returns, install a new mechatronics unit. After installing the new mechatronics unit, it must be reflashed to the latest level calibration.
P0729 Transmission Sixth gear ratio error. No 6th gear ratio detected by the TCM.
  • No 6th gear
  • No TCC engagements
  • May turn on MIL
  • No adaptive learning strategy
  • No self learning strategy
  • Mechanical limp-home mode in 5th gear
 Follow preliminary diagnostics. Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all DTCs. Test the system for normal operation. If the DTC returns, install a new mechatronics unit. After installing the new mechatronics unit, it must be reflashed to the latest level calibration.
P0731 Transmission First gear ratio error. No 1st gear ratio detected by the TCM.
  • No 1st gear
  • No TCC engagements
  • May turn on MIL
  • No adaptive learning strategy
  • No self learning strategy
  • Mechanical limp-home mode in 3rd gear
  • Max line pressure
 Follow preliminary diagnostics. Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all DTCs. Test the system for normal operation. If the DTC returns, install a new transmission. After installing the new transmission, the TCM module must be reflashed to the latest level calibration.
P0732 Transmission Second gear ratio error. No 2nd gear ratio detected by the TCM.
  • No TCC engagements
  • No adaptive learning strategy
  • Max line pressure
  • May turn on MIL
 Follow preliminary diagnostics. Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all DTCs. Test the system for normal operation. If the DTC returns, install a new transmission. After installing the new transmission, the TCM module must be reflashed to the latest level calibration.
P0733 Transmission Third gear ratio error. No 3rd gear ratio detected by the TCM.
  • No TCC engagements
  • No adaptive learning strategy
  • Max line pressure
  • May turn on MIL
  • Hold in 5th gear
 Follow preliminary diagnostics. Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all DTCs. Test the system for normal operation. If the DTC returns, install a new transmission. After installing the new transmission, the TCM module must be reflashed to the latest level calibration.
P0734 Transmission Fourth gear ratio error. No 4th gear ratio detected by the TCM.
  • No TCC engagements
  • No adaptive learning strategy
  • Max line pressure
  • May turn on MIL
  • Hold in 5th gear
 Follow preliminary diagnostics. Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all DTCs. Test the system for normal operation. If the DTC returns, install a new transmission. After installing the new transmission, the TCM module must be reflashed to the latest level calibration.
P0735 Transmission Fifth gear ratio error. No 5th gear ratio detected by the TCM.
  • No TCC engagements
  • No adaptive learning strategy
  • Max line pressure
  • May turn on MIL
  • Hold in 5th gear
 Follow preliminary diagnostics. Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all DTCs. Test the system for normal operation. If the DTC returns, install a new transmission. After installing the new transmission, the TCM module must be reflashed to the latest level calibration.
P0736 Transmission Reverse gear ratio error. No reverse gear ratio detected by the TCM.
  • No TCC engagements
  • No adaptive learning strategy
  • Max line pressure
  • May turn on MIL
  • Hold in 4th gear
 Follow preliminary diagnostics. Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all DTCs. Test the system for normal operation. If the DTC returns, install a new transmission. After installing the new transmission, the TCM module must be reflashed to the latest level calibration.
P0740 TCC Solenoid TCC solenoid circuit failure. TCC solenoid circuit fails. Circuit open.
  • May turn on MIL
  • No adaptive learning strategy
 Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all DTCs. Test the system for normal operation. If the DTC returns, install a new mechatronics unit. After installing the new mechatronics unit, it must be reflashed to the latest level calibration.
P0741 TCC TCC solenoid circuit stuck open. TCC solenoid, clutch or circuit open.
  • No TCC engagements
  • May turn on MIL
 Carry out normal diagnostics for TCC.
P0770 Shift Solenoid E (SS E) SS E circuit or solenoid failure. SS E circuit or solenoid failure.
  • Mechanical limp-home mode
  • May turn on MIL
 Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all DTCs. Test the system for normal operation. If the DTC returns, install a new mechatronics unit. After installing the new mechatronics unit, it must be reflashed to the latest level calibration.
P0781 Transmission 1-2 shift error. Incorrect ratio calculated during shift 1-2.
  • Incorrect gear selection depending on failure or mode and manual lever position. Shift errors may also be due to other internal transmission concerns (stuck valves, damaged friction material)
  • No TCC engagements
  • No adaptive learning strategy
  • Hold in 3rd, 2nd or 1st gear
  • May turn on MIL
 Follow preliminary diagnostics. Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all DTCs. Test the system for normal operation. If the DTC returns, install a new transmission. After installing the new transmission, the TCM module must be reflashed to the latest level calibration.
P0782 Transmission 2-3 shift error. Incorrect ratio calculated during shift 2-3.
  • Incorrect gear selection depending on failure or mode and manual lever position. Shift errors may also be due to other internal transmission concerns (stuck valves, damaged friction material)
  • No TCC engagements
  • No adaptive learning strategy
  • Hold in 4th, 3rd or 2nd gear
  • May turn on MIL
 Follow preliminary diagnostics. Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all DTCs. Test the system for normal operation. If the DTC returns, install a new transmission. After installing the new transmission, the TCM module must be reflashed to the latest level calibration.
P0783 Transmission 3-4 shift error. Incorrect ratio calculated during shift 3-4.
  • Incorrect gear selection depending on failure or mode and manual lever position. Shift errors may also be due to other internal transmission concerns (stuck valves, damaged friction material)
  • No TCC engagements
  • No adaptive learning strategy
  • Hold in 4th or 3rd gear
  • May turn on MIL
 Follow preliminary diagnostics. Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all DTCs. Test the system for normal operation. If the DTC returns, install a new transmission. After installing the new transmission, the TCM module must be reflashed to the latest level calibration.
P0784 Transmission 4-5 shift error. Incorrect ratio calculated during shift 4-5.
  • Incorrect gear selection depending on failure or mode and manual lever position. Shift errors may also be due to other internal transmission concerns (stuck valves, damaged friction material)
  • No TCC engagements
  • No adaptive learning strategy
  • Hold in 5th or 4th gear
  • May turn on MIL
 Follow preliminary diagnostics. Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all DTCs. Test the system for normal operation. If the DTC returns, install a new transmission. After installing the new transmission, the TCM module must be reflashed to the latest level calibration.
P0829 Transmission 5-6 shift error. Incorrect ratio calculated during shift 5-6.
  • Incorrect gear selection depending on failure or mode and manual lever position. Shift errors may also be due to other internal transmission concerns (stuck valves, damaged friction material)
  • No TCC engagements
  • Mechanical limp-home in 3rd gear
  • Mechanical limp-home in 2nd gear
  • May turn on MIL
 Follow preliminary diagnostics. Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all DTCs. Test the system for normal operation. If the DTC returns, install a new transmission. After installing the new transmission, the TCM module must be reflashed to the latest level calibration.
P0960 Pressure Control A (PC A) PC A circuit or solenoid failure or open circuit. PC A circuit or solenoid failed during operation.
  • No adaptive strategy
  • No self learning strategy
  • Max line pressure
 Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all DTCs. Test the system for normal operation. If the DTC returns, install a new mechatronics unit. After installing the new mechatronics unit, it must be reflashed to the latest level calibration.
P0962 PC A PC A solenoid signal or ground circuits either short or open solenoid circuit failure. Voltage through PC A solenoid is checked. An error will be noted if tolerance is exceeded. May turn on MIL Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all DTCs. Test the system for normal operation. If the DTC returns, install a new mechatronics unit. After installing the new mechatronics unit, it must be reflashed to the latest level calibration.
P0963 PC A PC A solenoid short to power circuit failure. Voltage through PC A solenoid is checked. An error will be noted if tolerance is exceeded.
  • Max line pressure
  • Deactivate clutch adaptations
 Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all DTCs. Test the system for normal operation. If the DTC returns, install a new mechatronics unit. After installing the new mechatronics unit, it must be reflashed to the latest level calibration.
P0972 Shift Solenoid A (SS A) SS A circuit or solenoid failure. SS A circuit or solenoid failure.
  • Mechanical limp-home mode
  • May turn on MIL
 Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all DTCs. Test the system for normal operation. If the DTC returns, install a new mechatronics unit. After installing the new mechatronics unit, it must be reflashed to the latest level calibration.
P0973 SS A SS A solenoid or circuit shorted to ground or open. Voltage through SS A solenoid is checked. An error will be noted if tolerance is exceeded. Short to ground failure detected.
  • Mechanical limp-home mode
  • May turn on MIL
 Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all DTCs. Test the system for normal operation. If the DTC returns, install a new mechatronics unit. After installing the new mechatronics unit, it must be reflashed to the latest level calibration.
P0974 SS A SS A solenoid or circuit shorted to power or open. Voltage through SS A solenoid is checked. An error will be noted if tolerance is exceeded. Short to ground failure detected.
  • Mechanical limp-home mode
  • May turn on MIL
 Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all DTCs. Test the system for normal operation. If the DTC returns, install a new mechatronics unit. After installing the new mechatronics unit, it must be reflashed to the latest level calibration.
P0975 Shift Solenoid B (SS B) SS B circuit shorted to ground or open. SS B circuit or solenoid failure.
  • Mechanical limp-home mode
  • May turn on MIL
 Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all DTCs. Test the system for normal operation. If the DTC returns, install a new mechatronics unit. After installing the new mechatronics unit, it must be reflashed to the latest level calibration.
P0976 SS B SS B solenoid or circuit shorted to ground or open. Voltage through SS B solenoid is checked. An error will be noted if tolerance is exceeded. Short to ground failure detected.
  • Mechanical limp-home mode
  • May turn on MIL
 Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all DTCs. Test the system for normal operation. If the DTC returns, install a new mechatronics unit. After installing the new mechatronics unit, it must be reflashed to the latest level calibration.
P0977 SS B SS B solenoid or circuit shorted to power or open. Voltage through SS B solenoid is checked. An error will be noted if tolerance is exceeded. Short to ground failure detected.
  • Mechanical limp-home mode
  • May turn on MIL
 Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all DTCs. Test the system for normal operation. If the DTC returns, install a new mechatronics unit. After installing the new mechatronics unit, it must be reflashed to the latest level calibration.
P0978 Shift Solenoid C (SS C) SS C circuit shorted to ground or open. SS C circuit or solenoid failure.
  • Mechanical limp-home mode
  • May turn on MIL
 Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all DTCs. Test the system for normal operation. If the DTC returns, install a new mechatronics unit. After installing the new mechatronics unit, it must be reflashed to the latest level calibration.
P0979 SS C SS C solenoid or circuit shorted to ground or open. Voltage through SS C solenoid is checked. An error will be noted if tolerance is exceeded. Short to ground failure detected.
  • Mechanical limp-home mode
  • May turn on MIL
 Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all DTCs. Test the system for normal operation. If the DTC returns, install a new mechatronics unit. After installing the new mechatronics unit, it must be reflashed to the latest level calibration.
P0980 SS C SS C solenoid or circuit shorted to power or open. Voltage through SS C solenoid is checked. An error will be noted if tolerance is exceeded. Short to ground failure detected.
  • Mechanical limp-home mode
  • May turn on MIL
 Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all DTCs. Test the system for normal operation. If the DTC returns, install a new mechatronics unit. After installing the new mechatronics unit, it must be reflashed to the latest level calibration.
P0981 Shift Solenoid D (SS D) SS D circuit shorted to ground or open. SS D circuit or solenoid failure.
  • Mechanical limp-home mode
  • May turn on MIL
 Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all DTCs. Test the system for normal operation. If the DTC returns, install a new mechatronics unit. After installing the new mechatronics unit, it must be reflashed to the latest level calibration.
P0982 SS D SS D solenoid or circuit shorted to ground or open. Voltage through SS D solenoid is checked. An error will be noted if tolerance is exceeded. Short to ground failure detected.
  • Mechanical limp-home mode
  • May turn on MIL
 Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all DTCs. Test the system for normal operation. If the DTC returns, install a new mechatronics unit. After installing the new mechatronics unit, it must be reflashed to the latest level calibration.
P0983 SS D SS D solenoid or circuit shorted to power or open. Voltage through SS D solenoid is checked. An error will be noted if tolerance is exceeded. Short to ground failure detected.
  • Mechanical limp-home mode
  • May turn on MIL
 Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all DTCs. Test the system for normal operation. If the DTC returns, install a new mechatronics unit. After installing the new mechatronics unit, it must be reflashed to the latest level calibration.
P0985 SS E SS E solenoid signal circuit shorted to ground or open. Voltage through SS E solenoid is checked. An error will be noted if tolerance is exceeded. Short to ground failure detected.
  • Mechanical limp-home mode
  • May turn on MIL
 Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all DTCs. Test the system for normal operation. If the DTC returns, install a new mechatronics unit. After installing the new mechatronics unit, it must be reflashed to the latest level calibration.
P0986 SS E SS E solenoid or circuit shorted to power or open. Voltage through SS E solenoid is checked. An error will be noted if tolerance is exceeded. Short to ground failure detected.
  • Mechanical limp-home mode
  • May turn on MIL
 Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all DTCs. Test the system for normal operation. If the DTC returns, install a new mechatronics unit. After installing the new mechatronics unit, it must be reflashed to the latest level calibration.
P1707 Transmission Park/neutral switch circuit failure. Circuit or sensor failure. Engine will not crank in PARK or NEUTRAL or engine will crank in all gears. Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all DTCs. Test the system for normal operation. If the DTC returns, go to Pinpoint Test A .
P1719 PCM Engine torque signal is inaccurate. TCM received an inaccurate signal via CAN.
  • May turn on MIL
  • No shifts
  • TCC will not engage
  • Harsh engagements
 Perform self test of PCM. Refer to Introduction - Gasoline Engines article to diagnose any DTCs present. If no PCM DTCs, identify the driveability symptom present and refer to the Introduction - Gasoline Engines article for further diagnosis.
P1910 Reverse Lamp Circuit Reverse solenoid circuit failure. Reverse solenoid circuit failed open.
  • Park lock or interlock switched OFF
  • Reverse lamps may be on at all times
  • Reverse may not come on
 Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all the DTCs. Test system for normal operation. If DTC returns, refer to EXTERIOR LIGHTING article.
P1911 Reverse Lamps Reverse solenoid signal circuit shorted to ground. Circuit low. Reverse solenoid circuit fails to provide voltage drop across solenoid. - Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all the DTCs. Test system for normal operation. If DTC returns, refer to EXTERIOR LIGHTING article.
P1912 Reverse Lamps Reverse solenoid circuit shorted to power. Circuit high. Reverse solenoid circuit fails to provide voltage drop across solenoid. Circuit shorted to power. Park lock or interlock switched OFF. Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all the DTCs. Test system for normal operation. If DTC returns, refer to EXTERIOR LIGHTING article.
P1934 Vehicle Speed Sensor (VSS) VSS input signal error. VSS input does not match OSS signal. Possible installation of wrong tire or axle. Wrong ratio. Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all the DTCs. Refer to the Introduction - Gasoline Engines article.
P2544 PCM Torque management request input signal A. Data received from the PCM or engine components are not correct for the vehicle operating conditions. Incorrect engine torque calculation may result. Transmission may enable limp-home strategies or increase pressures. Engine components and PCM may or may not set additional DTCs. P2544, fuel monitor error, electronic throttle control (ETC) sensor failure and mass air flow (MAF) sensor failures may be present. MIL may illuminate. Refer to the Introduction - Gasoline Engines article.
P2763 TCC TCC solenoid signal circuit shorted to ground. Circuit high. TCC solenoid circuit fails to provide voltage drop across solenoid. Circuit shorted to power.
  • No TCC engagements
  • May turn on MIL
  • No adaptive learning strategy
 Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all DTCs. Test the system for normal operation. If the DTC returns, install a new mechatronics unit. After installing the new mechatronics unit, it must be reflashed to the latest level calibration.
P2764 TCC TCC solenoid circuit shorted to power. Circuit low. TCC solenoid circuit fails to provide voltage drop across solenoid.
  • No TCC engagements
  • May turn on MIL
  • No adaptive learning strategy
 Monitor the appropriate PID to validate that an error is present. Refer to Diagnostic Parameters Identification (PID) Chart . Clear all DTCs. Test the system for normal operation. If the DTC returns, install a new mechatronics unit. After installing the new mechatronics unit, it must be reflashed to the latest level calibration.
U0073 CAN CAN communication link error. CAN communication bus OFF, short circuit CAN high to CAN low. May turn on MIL Refer to Introduction - Gasoline Engines articlea .
U0155 CAN TCM communication link error. CAN link error detected by TCM and instrument panel (IP).
  • No communication with instrument panel cluster (IPC).
  • May turn on MIL
 Refer to Introduction - Gasoline Engines articlea .
U0100 CAN TCM communication link error. CAN link error detected by PCM, between TCM and ECM.
  • Mechanical limp-home mode in 3rd gear
  • Max line pressure
  • No adaptive learning strategy
  • May turn on MIL
 Refer to Introduction - Gasoline Engines articlea .
U0121 CAN TCM communication link error. PCM/TCM have detected an error in the CAN wheel RPM information from the ABS system. - Refer to Introduction - Gasoline Engines articlea .
U0140 PCM/ABS/Body Control Module (BCM) CAN timeout of PCM, ABS or BCM. TCM received incorrect information from other modules due to CAN timeout from PCM, ABS or BCM. May turn on MIL or transmission control indicator lamp (TCIL) Clear all DTCs. For PCM, ABS or BCM systems. Refer to the Introduction - Gasoline Engines article.
U0401 PCM/TCM Invalid data received from the PCM or engine components. Data received from the PCM or engine components is not correct for the vehicle operating conditions. Transmission may enable limp-home strategies or increase pressures. Engine components and PCM may or may not set additional DTCs. P2544, fuel monitor error, ETC sensor failure and MAF sensor failures may be present. MIL may illuminate. Refer to the Introduction - Gasoline Engines article.
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