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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - 6L50/6L80/6L90 - Introduction (2 Of 2) >> Diagnostic Information and Procedures >> Diagnostic Code Index

Diagnostic Code Index

DIAGNOSTIC CODE INDEX

DTC Description
DTC P0218 P0218: Transmission Fluid Overtemperature
DTC P0562 or P0563 P0562: System Voltage Low
P0563: System Voltage High
DTC P0601, P0602, P0603, P0604, or P1621 P0601: Transmission Control Module (TCM) Read Only Memory (ROM)
P0602: Transmission Control Module (TCM) Not Programmed
P0603: Transmission Control Module (TCM) Long Term Memory Reset
P0604: Transmission Control Module (TCM) Random Access Memory (RAM)
P1621: Transmission Control Module (TCM) Long Term Memory Performance
DTC P0634 P0634: Transmission Control Module (TCM) Overtemperature
DTC P0667, P0668, or P0669 P0667: Transmission Control Module (TCM) Temperature Sensor Performance
P0668: Transmission Control Module (TCM) Temperature Sensor Circuit Low Voltage
P0669: Transmission Control Module (TCM) Temperature Sensor Circuit High Voltage
DTC P0711 P0711: Transmission Fluid Temperature (TFT) Sensor Performance
DTC P0712 or P0713 P0712: Transmission Fluid Temperature (TFT) Sensor Circuit Low Voltage
P0713: Transmission Fluid Temperature (TFT) Sensor Circuit High Voltage
DTC P0716 or P0717 P0716: Input Speed Sensor Performance
P0717: Input Speed Sensor Circuit Low Voltage
DTC P0719 or P0724 DTC P0719 Brake Switch Circuit Low Voltage
DTC P0724 Brake Switch Circuit High Voltage
DTC P0722 or P0723 P0722: Output Speed Sensor (OSS) Circuit Low Voltage
P0723: Output Speed Sensor (OSS) Intermittent
DTC P0736 P0736: Incorrect Reverse Ratio
DTC P0741 or P0742 P0741: Torque Converter Clutch (TCC) - Stuck Off
P0742: Torque Converter Clutch (TCC) - Stuck On
DTC P0751 P0751: Shift Solenoid (SS) 1 Valve Performance - Stuck Off
DTC P0752 P0752: Shift Solenoid (SS) 1 Valve Performance - Stuck On
DTC P0756 P0756: Shift Solenoid (SS) 2 Valve Performance - Stuck Off
DTC P0776 or P0777 P0776: Clutch Pressure Control (PC) Solenoid 2 - Stuck Off
P0777: Clutch Pressure Control (PC) Solenoid 2 - Stuck On
DTC P0796 or P0797 P0796: Clutch Pressure Control (PC) Solenoid 3 - Stuck Off
P0797: Clutch Pressure Control (PC) Solenoid 3 - Stuck On
DTC P0815, P0816, or P0826 P0815: Upshift Switch Circuit
P0816: Downshift Switch Circuit
P0826: Up and Down Shift Switch Circuit
DTC P0842 or P0843 P0842: Transmission Fluid Pressure (TFP) Switch 1 Circuit Low Voltage
P0843: Transmission Fluid Pressure (TFP) Switch 1 Circuit High Voltage
DTC P0851 or P0852 P0851: Park/Neutral Position (PNP) Switch Circuit Low Voltage
P0852: Park/Neutral Position (PNP) Switch Circuit High Voltage
DTC P0872 or P0873 P0872: Transmission Fluid Pressure (TFP) Switch 3 Circuit Low Voltage
P0873: Transmission Fluid Pressure (TFP) Switch 3 Circuit High Voltage
DTC P0877 or P0878 P0877: Transmission Fluid Pressure (TFP) Switch 4 Circuit Low Voltage
P0878: Transmission Fluid Pressure (TFP) Switch 4 Circuit High Voltage
DTC P0961, P0962 or P0963 P0961: Line Pressure Control (PC) Solenoid System Performance
P0962: Line Pressure Control (PC) Solenoid Control Circuit Low Voltage
P0963: Line Pressure Control (PC) Solenoid Control Circuit High Voltage
DTC P0965, P0966 or P0967 P0965: Clutch Pressure Control (PC) Solenoid 2 System Performance
P0966: Clutch Pressure Control (PC) Solenoid 2 Control Circuit Low Voltage
P0967: Clutch Pressure Control (PC) Solenoid 2 Control Circuit High Voltage
DTC P0969, P0970 or P0971 P0969: Clutch Pressure Control (PC) Solenoid 3 System Performance
P0970: Clutch Pressure Control (PC) Solenoid 3 Control Circuit Low Voltage
P0971: Clutch Pressure Control (PC) Solenoid 3 Control Circuit High Voltage
DTC P0973 or P0974 P0973: Shift Solenoid (SS) 1 Control Circuit Low Voltage
P0974: Shift Solenoid (SS) 1 Control Circuit High Voltage
DTC P0976 or P0977 P0976: Shift Solenoid (SS) 2 Control Circuit Low Voltage
P0977: Shift Solenoid (SS) 2 Control Circuit High Voltage
DTC P0989 or P0990 P0989: Transmission Fluid Pressure (TFP) Switch 5 Circuit Low Voltage
P0990: Transmission Fluid Pressure (TFP) Switch 5 Circuit High Voltage
DTC P1684, P1685 or P1686 P1684: Transmission Control Module (TCM) Power Up Temperature Sensor Performance
P1685: Transmission Control Module (TCM) Power Up Temperature Sensor Circuit Low Voltage
P1686: Transmission Control Module (TCM) Power Up Temperature Sensor Circuit High Voltage
DTC P1751 P1751: Shift Valve 1 Performance
DTC P1825 or P1915 P1825: Internal Mode Switch - Invalid Range
P1915: Internal Mode Switch Does Not Indicate Park/Neutral (P/N) During Start
DTC P1831 or P1832 P1831: Pressure Control (PC)/Shift Lock Solenoid Control Circuit Low Voltage
P1832: Pressure Control (PC)/Shift Lock Solenoid Control Circuit High Voltage
DTC P2534 P2534: Ignition 1 Switch Circuit Low Voltage
DTC P2714 or P2715 P2714: Clutch Pressure Control (PC) Solenoid 4 - Stuck Off
P2715: Clutch Pressure Control (PC) Solenoid 4 - Stuck On
DTC P2719, P2720 or P2721 P2719: Clutch Pressure Control (PC) Solenoid 4 System Performance
P2720: Clutch Pressure Control (PC) Solenoid 4 Control Circuit Low Voltage
P2721: Clutch Pressure Control (PC) Solenoid 4 Control Circuit High Voltage
DTC P2723 or P2724 P2723: Clutch Pressure Control (PC) Solenoid 5 - Stuck Off
P2724: Clutch Pressure Control (PC) Solenoid 5 - Stuck On
DTC P2728, P2729 or P2730 P2728: Clutch Pressure Control (PC) Solenoid 5 System Performance
P2729: Clutch Pressure Control (PC) Solenoid 5 Control Circuit Low Voltage
P2730: Clutch Pressure Control (PC) Solenoid 5 Control Circuit High Voltage
DTC P2762, P2763, or P2764 P2762: Torque Converter Clutch (TCC) Pressure Control Solenoid System Performance
P2763: Torque Converter Clutch (TCC) Pressure Control Solenoid Control Circuit Low Voltage
P2764: Torque Converter Clutch (TCC) Pressure Control Solenoid Control Circuit High Voltage