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Home >> Subaru >> 2021 >> Crosstrek Hybrid >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> P-HEV Drive Motor System (Diagnostics) (2 Of 3) >> Diagnostic Procedure With Diagnostic Trouble Code (DTC) >> DTC P0A94-9E: Dc/Dc Converter Stuck On >> Notes

DTC P0A94-9E: Dc/Dc Converter Stuck On: Notes

  1. - 

    Detecting condition: 

    Boosting converter fail signal detection (circuit malfunction)

    (1 trip detection logic)

    Trouble symptom: 

    • Reduced output power
    • A driving range is limited
    • Engine not stopped
    CAUTION: Before performing diagnosis, refer to "CAUTION" in "General Description". Ref. to P-HEV DRIVE MOTOR (DIAGNOSTICS)>GENERAL DESCRIPTION>CAUTION .
  1. CHECK DTC  .

    Read the following DTCs using Subaru Select Monitor. Ref. to P-HEV HYBRID POWERTRAIN CONTROL (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) . Ref. to P-HEV DRIVE MOTOR (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) . Ref. to P-HEV HIGH VOLTAGE BATTERY (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) .

    • P-HEV Hybrid Powertrain Control
    • P-HEV Drive Motor
    • P-HEV High Voltage Battery
    NOTE:
    Malfunction contents System Related DTC
    Insulation malfunction P-HEV Hybrid Powertrain Control P1C7C-49 HYBRID/EV BATTERY VOLTAGE SYSTEM ISOLATION (A/C AREA) INTERNAL ELECTRONIC FAILURE
    P1C7D-49 HYBRID/EV BATTERY VOLTAGE SYSTEM ISOLATION (HYBRID/EV BATTERY AREA) INTERNAL ELECTRONIC FAILURE
    P1C7E-49 HYBRID/EV BATTERY VOLTAGE SYSTEM ISOLATION (TRANSAXLE AREA) INTERNAL ELECTRONIC FAILURE
    P1C7F-49 HYBRID/EV BATTERY VOLTAGE SYSTEM ISOLATION (DIRECT CURRENT AREA) INTERNAL ELECTRONIC FAILURE
    High voltage system failure P-HEV Hybrid Powertrain Control P0AD9-11 HYBRID/EV BATTERY POSITIVE CONTACTOR CIRCUIT SHORT TO GROUND
    P0AD9-15 HYBRID/EV BATTERY POSITIVE CONTACTOR CIRCUIT SHORT TO AUXILIARY BATTERY OR OPEN
    P0ADD-11 HYBRID/EV BATTERY NEGATIVE CONTACTOR CIRCUIT SHORT TO GROUND
    P0ADD-15 HYBRID/EV BATTERY NEGATIVE CONTACTOR CIRCUIT SHORT TO AUXILIARY BATTERY OR OPEN
    P1C84-49 HIGH VOLTAGE POWER RESOURCE CIRCUIT SHORT DURING READY ON
    HV battery related failure P-HEV High Voltage Battery P0560-14 SYSTEM VOLTAGE (BATT) CIRCUIT SHORT TO GROUND OR OPEN
    P0606-29 HYBRID/EV BATTERY ENERGY CONTROL MODULE PROCESSOR TO MONITORING PROCESSOR SIGNAL INVALID
    P0606-87 HYBRID/EV BATTERY ENERGY CONTROL MODULE PROCESSOR TO MONITORING PROCESSOR MISSING MESSAGE
    P060A-47 HYBRID/EV BATTERY ENERGY CONTROL MODULE MONITORING PROCESSOR WATCHDOG/SAFETY MCU FAILURE
    P060A-87 HYBRID/EV BATTERY ENERGY CONTROL MODULE PROCESSOR FROM MONITORING PROCESSOR MISSING MESSAGE
    P060B-16 HYBRID/EV BATTERY ENERGY CONTROL MODULE A/D PROCESSING CIRCUIT VOLTAGE BELOW THRESHOLD
    P060B-49 HYBRID/EV BATTERY ENERGY CONTROL MODULE A/D PROCESSING INTERNAL ELECTRONIC FAILURE
    P0ABF-11 HYBRID/EV BATTERY CURRENT SENSOR "A" CIRCUIT SHORT TO GROUND
    P0ABF-15 HYBRID/EV BATTERY CURRENT SENSOR "A" CIRCUIT SHORT TO AUXILIARY BATTERY OR OPEN
    P0ABF-28 HYBRID/EV BATTERY CURRENT SENSOR "A" SIGNAL BIAS LEVEL OUT OF RANGE/ZERO ADJUSTMENT FAILURE
    P0ABF-2A HYBRID/EV BATTERY CURRENT SENSOR "A" SIGNAL STUCK IN RANGE
    P0B0E-11 HYBRID/EV BATTERY CURRENT SENSOR "B" CIRCUIT SHORT TO GROUND
    P0B0E-15 HYBRID/EV BATTERY CURRENT SENSOR "B" CIRCUIT SHORT TO AUXILIARY BATTERY OR OPEN
    P0B13-62 HYBRID/EV BATTERY CURRENT SENSOR "A"/"B" SIGNAL COMPARE FAILURE
    P0E2D-00 HYBRID/EV BATTERY ENERGY CONTROL MODULE HYBRID/EV BATTERY MONITOR PERFORMANCE
    P1A00-1C HYBRID BATTERY STACK 2 CELL VOLTAGE DETECTION VOLTAGE OUT OF RANGE
    P1A60-17 HYBRID/EV BATTERY STACK 2 CELL CIRCUIT VOLTAGE ABOVE THRESHOLD
    P1A61-16 HYBRID/EV BATTERY STACK 2 CELL CIRCUIT VOLTAGE BELOW THRESHOLD
    P1A81-00 HYBRID/EV BATTERY STACK 1 DELTA SOC HIGH (EXTREME)
    P1A86-00 HYBRID/EV BATTERY STACK 2 DELTA SOC HIGH (EXTREME)
    P1AC4-13 HYBRID/EV BATTERY STACK 1 CURRENT INTERRUPT DEVICE CIRCUIT OPEN
    P1AC4-9E HYBRID/EV BATTERY STACK 1 CURRENT INTERRUPT DEVICE STUCK ON
    P1AC5-13 HYBRID/EV BATTERY STACK 2 CURRENT INTERRUPT DEVICE CIRCUIT OPEN
    P1AC5-9E HYBRID/EV BATTERY STACK 2 CURRENT INTERRUPT DEVICE STUCK ON
    P1AFD-00 FLYING CAPACITOR CIRCUIT VOLTAGE OUT OF RANGE
    P1AFD-1C FLYING CAPACITOR/INTERNAL CONTROL MODULE HYBRID/EV BATTERY MONITOR VOLTAGE OUT OF RANGE
    P1CBB-12 HYBRID/EV BATTERY CURRENT SENSOR POWER SUPPLY CIRCUIT SHORT TO AUXILIARY BATTERY
    P1CBB-14 HYBRID/EV BATTERY CURRENT SENSOR POWER SUPPLY CIRCUIT SHORT TO GROUND OR OPEN
    P1CC8-1E HYBRID/EV BATTERY STACK 1 VOLTAGE DIFFERENCE OUT OF RANGE
    P1CC9-1E HYBRID/EV BATTERY STACK 2 VOLTAGE DIFFERENCE OUT OF RANGE
    P301A-1C HYBRID BATTERY STACK 1 CELL VOLTAGE DETECTION VOLTAGE OUT OF RANGE
    P31AA-17 HYBRID/EV BATTERY STACK 1 CELL CIRCUIT VOLTAGE ABOVE THRESHOLD
    P31AB-16 HYBRID/EV BATTERY STACK 1 CELL CIRCUIT VOLTAGE BELOW THRESHOLD
    P31B3-00 HYBRID/EV BATTERY VOLTAGE HIGH
    P33DA-1E HYBRID/EV BATTERY STACK 1 CIRCUIT RESISTANCE OUT OF RANGE
    P33DB-1E HYBRID/EV BATTERY STACK 2 CIRCUIT RESISTANCE OUT OF RANGE
    P33E0-1B HYBRID/EV BATTERY STACK 1 CIRCUIT RESISTANCE ABOVE THRESHOLD
    P33E1-1B HYBRID/EV BATTERY STACK 2 CIRCUIT RESISTANCE ABOVE THRESHOLD
    P33EC-16 (EXTREME) HYBRID/EV BATTERY STACK 1 CELL CIRCUIT VOLTAGE BELOW THRESHOLD
    P33ED-16 (EXTREME) HYBRID/EV BATTERY STACK 2 CELL CIRCUIT VOLTAGE BELOW THRESHOLD
    U0293-87 LOST COMMUNICATION WITH HYBRID POWERTRAIN CONTROL MODULE MISSING MESSAGE
    U1150-87 LOST COMMUNICATION WITH HYBRID POWERTRAIN CONTROL MODULE (HYBRID/EV BATTERY LOCAL BUS) MISSING MESSAGE
    P-HEV Hybrid Powertrain Control P0A1F-94 HYBRID/EV BATTERY ENERGY CONTROL MODULE UNEXPECTED OPERATION
    P0ABF-00 HYBRID/EV BATTERY CURRENT SENSOR "A" CIRCUIT RANGE/PERFORMANCE
    P0B23-1C HYBRID/EV BATTERY "A" VOLTAGE SENSOR VOLTAGE OUT OF RANGE
    U0111-87 LOST COMMUNICATION WITH HYBRID/EV BATTERY ENERGY CONTROL MODULE "A" MISSING MESSAGE
    U1175-87 LOST COMMUNICATION WITH HYBRID/EV BATTERY ENERGY CONTROL MODULE "A" (POWERTRAIN BUS) MISSING MESSAGE
    Microcomputer malfunction P-HEV Drive Motor P0A1A-47 GENERATOR CONTROL MODULE WATCHDOG/SAFETY MC FAILURE
    P0A1A-49 GENERATOR CONTROL MODULE INTERNAL ELECTRONIC FAILURE
    P0A1B-1F GENERATOR CONTROL MODULE CIRCUIT INTERMITTENT
    P1C2A-1C GENERATOR A/D CONVERTER CIRCUIT CIRCUIT VOLTAGE OUT OF RANGE
    P1C2A-49 GENERATOR A/D CONVERTER CIRCUIT INTERNAL ELECTRONIC FAILURE
    P1C2B-1C DRIVE MOTOR "A" CONTROL MODULE A/D CONVERTER CIRCUIT VOLTAGE OUT OF RANGE
    P1C2B-49 DRIVE MOTOR "A" CONTROL MODULE A/D CONVERTER CIRCUIT INTERNAL ELECTRONIC FAILURE
    P3133-83 COMMUNICATION ERROR FROM GENERATOR TO DRIVE MOTOR "A" VALUE OF SIGNAL PROTECTION CALCULATION INCORRECT
    P3133-86 COMMUNICATION ERROR FROM GENERATOR TO DRIVE MOTOR "A" SIGNAL INVALID
    P3133-87 COMMUNICATION ERROR FROM GENERATOR TO DRIVE MOTOR "A" MISSING MESSAGE
    P3134-83 COMMUNICATION ERROR FROM DRIVE MOTOR "A" TO GENERATOR VALUE OF SIGNAL PROTECTION CALCULATION INCORRECT
    P3134-86 COMMUNICATION ERROR FROM DRIVE MOTOR "A" TO GENERATOR SIGNAL INVALID
    P3134-87 COMMUNICATION ERROR FROM DRIVE MOTOR "A" TO GENERATOR MISSING MESSAGE
    P-HEV Hybrid Powertrain Control P0A1B-49 DRIVE MOTOR "A" CONTROL MODULE INTERNAL ELECTRONIC FAILURE
    Power supply system malfunction P-HEV Drive Motor P06B0-1C GENERATOR CONTROL MODULE POSITION SENSOR REF POWER SOURCE CIRCUIT VOLTAGE OUT OF RANGE
    P06D6-1C GENERATOR CONTROL MODULE OFFSET POWER CIRCUIT VOLTAGE OUT OF RANGE
    Communication system malfunction P-HEV Drive Motor P3124-87 LOST COMMUNICATION BETWEEN DRIVE MOTOR "A" AND HV ECU MISSING MESSAGE
    P-HEV Hybrid Powertrain Control P3123-87 LOST COMMUNICATION WITH DRIVE MOTOR CONTROL MODULE "A" FROM HYBRID/EV CONTROL MODULE MISSING MESSAGE
    Sensor and actuator circuit malfunction P-HEV Drive Motor P0A3F-16 DRIVE MOTOR "A" POSITION SENSOR CIRCUIT VOLTAGE BELOW THRESHOLD
    P0A3F-21 DRIVE MOTOR "A" POSITION SENSOR SIGNAL AMPLITUDE < MINIMUM
    P0A3F-22 DRIVE MOTOR "A" POSITION SENSOR SIGNAL AMPLITUDE>MAXIMUM
    P0A4B-16 GENERATOR POSITION SENSOR CIRCUIT VOLTAGE BELOW THRESHOLD
    P0A4B-21 GENERATOR POSITION SENSOR SIGNAL AMPLITUDE < MINIMUM
    P0A4B-22 GENERATOR POSITION SENSOR SIGNAL AMPLITUDE>MAXIMUM
    P0A60-12 DRIVE MOTOR "A" PHASE V CURRENT (HIGH RESOLUTION) CIRCUIT SHORT TO BATTERY
    P0A60-14 DRIVE MOTOR "A" PHASE V CURRENT (HIGH RESOLUTION) CIRCUIT SHORT TO GROUND OR OPEN
    P0A60-1C DRIVE MOTOR "A" PHASE V CURRENT (HIGH RESOLUTION) CIRCUIT VOLTAGE OUT OF RANGE
    P0A63-12 DRIVE MOTOR "A" PHASE W CURRENT (HIGH RESOLUTION) CIRCUIT SHORT TO BATTERY
    P0A63-14 DRIVE MOTOR "A" PHASE W CURRENT (HIGH RESOLUTION) CIRCUIT SHORT TO GROUND OR OPEN
    P0A63-1C DRIVE MOTOR "A" PHASE W CURRENT (HIGH RESOLUTION) CIRCUIT VOLTAGE OUT OF RANGE
    P0BE5-12 DRIVE MOTOR "A" PHASE U CURRENT SENSOR CIRCUIT SHORT TO BATTERY
    P0BE5-14 DRIVE MOTOR "A" PHASE U CURRENT SENSOR CIRCUIT SHORT TO GROUND OR OPEN
    P0BE5-28 DRIVE MOTOR "A" PHASE U CURRENT SENSOR SIGNAL BIAS LEVEL OUT OF RANGE/ZERO ADJUSTMENT FAILURE
    P0BE9-12 DRIVE MOTOR "A" PHASE V CURRENT SENSOR CIRCUIT SHORT TO BATTERY
    P0BE9-14 DRIVE MOTOR "A" PHASE V CURRENT SENSOR CIRCUIT SHORT TO GROUND OR OPEN
    P0BE9-28 DRIVE MOTOR "A" PHASE V CURRENT SENSOR SIGNAL BIAS LEVEL OUT OF RANGE/ZERO ADJUSTMENT FAILURE
    P0BED-12 DRIVE MOTOR "A" PHASE W CURRENT SENSOR CIRCUIT SHORT TO BATTERY
    P0BED-14 DRIVE MOTOR "A" PHASE W CURRENT SENSOR CIRCUIT SHORT TO GROUND OR OPEN
    P0BED-28 DRIVE MOTOR "A" PHASE W CURRENT SENSOR SIGNAL BIAS LEVEL OUT OF RANGE/ZERO ADJUSTMENT FAILURE
    P0BFD-62 DRIVE MOTOR "A" PHASE U-V-W CURRENT SENSOR SIGNAL COMPARE FAILURE
    P0C50-13 DRIVE MOTOR "A" POSITION SENSOR CIRCUIT "A" CIRCUIT OPEN
    P0C50-16 DRIVE MOTOR "A" POSITION SENSOR CIRCUIT "A" CIRCUIT VOLTAGE BELOW THRESHOLD
    P0C50-17 DRIVE MOTOR "A" POSITION SENSOR CIRCUIT "A" CIRCUIT VOLTAGE ABOVE THRESHOLD
    P0C5A-13 DRIVE MOTOR "A" POSITION SENSOR CIRCUIT "B" CIRCUIT OPEN
    P0C5A-16 DRIVE MOTOR "A" POSITION SENSOR CIRCUIT "B" CIRCUIT VOLTAGE BELOW THRESHOLD
    P0C5A-17 DRIVE MOTOR "A" POSITION SENSOR CIRCUIT "B" CIRCUIT VOLTAGE ABOVE THRESHOLD
    P0C64-13 GENERATOR POSITION SENSOR CIRCUIT "A" CIRCUIT OPEN
    P0C64-16 GENERATOR POSITION SENSOR CIRCUIT "A" CIRCUIT VOLTAGE BELOW THRESHOLD
    P0C64-17 GENERATOR POSITION SENSOR CIRCUIT "A" CIRCUIT VOLTAGE ABOVE THRESHOLD
    P0C69-13 GENERATOR POSITION SENSOR CIRCUIT "B" CIRCUIT OPEN
    P0C69-16 GENERATOR POSITION SENSOR CIRCUIT "B" CIRCUIT VOLTAGE BELOW THRESHOLD
    P0C69-17 GENERATOR POSITION SENSOR CIRCUIT "B" CIRCUIT VOLTAGE ABOVE THRESHOLD
    P0D2D-16 DRIVE MOTOR "A" INVERTER VOLTAGE SENSOR(VH) CIRCUIT VOLTAGE BELOW THRESHOLD
    P0D2D-17 DRIVE MOTOR "A" INVERTER VOLTAGE SENSOR(VH) CIRCUIT VOLTAGE ABOVE THRESHOLD
    P0DFA-62 GENERATOR PHASE U-V-W CURRENT SENSOR SIGNAL COMPARE FAILURE
    P0E00-12 GENERATOR PHASE U CURRENT SENSOR CIRCUIT SHORT TO BATTERY
    P0E00-14 GENERATOR PHASE U CURRENT SENSOR CIRCUIT SHORT TO GROUND OR OPEN
    P0E00-28 GENERATOR PHASE U CURRENT SENSOR SIGNAL BIAS LEVEL OUT OF RANGE/ZERO ADJUSTMENT FAILURE
    P0E04-12 GENERATOR PHASE V CURRENT SENSOR CIRCUIT SHORT TO BATTERY
    P0E04-14 GENERATOR PHASE V CURRENT SENSOR CIRCUIT SHORT TO GROUND OR OPEN
    P0E04-28 GENERATOR PHASE V CURRENT SENSOR SIGNAL BIAS LEVEL OUT OF RANGE/ZERO ADJUSTMENT FAILURE
    P0E08-12 GENERATOR PHASE W CURRENT SENSOR CIRCUIT SHORT TO BATTERY
    P0E08-14 GENERATOR PHASE W CURRENT SENSOR CIRCUIT SHORT TO GROUND OR OPEN
    P0E08-28 GENERATOR PHASE W CURRENT SENSOR SIGNAL BIAS LEVEL OUT OF RANGE/ZERO ADJUSTMENT FAILURE
    P0E31-16 DC/DC CONVERTER VOLTAGE SENSOR "A" (VL) CIRCUIT VOLTAGE BELOW THRESHOLD
    P0E31-17 DC/DC CONVERTER VOLTAGE SENSOR "A" (VL) CIRCUIT VOLTAGE ABOVE THRESHOLD
    P0E51-11 DC/DC CONVERTER CURRENT SENSOR CIRCUIT SHORT TO GROUND
    P0E51-15 DC/DC CONVERTER CURRENT SENSOR CIRCUIT SHORT TO BATTERY OR OPEN
    P0E51-28 DC/DC CONVERTER CURRENT SENSOR SIGNAL BIAS LEVEL OUT OF RANGE/ZERO ADJUSTMENT FAILURE
    P1CAC-49 GENERATOR POSITION SENSOR INTERNAL ELECTRONIC FAILURE
    P1CAD-49 DRIVE MOTOR "A" POSITION SENSOR INTERNAL ELECTRONIC FAILURE
    P1CAF-38 GENERATOR POSITION SENSOR REF SIGNAL CYCLE MALFUNCTION SIGNAL FREQUENCY INCORRECT
    P1CB0-38 DRIVE MOTOR "A" POSITION SENSOR REF SIGNAL FREQUENCY INCORRECT
    P1CFF-62 HYBRID/EV BATTERY CURRENT/DC/DC CONVERTER CURRENT SIGNAL COMPARE FAILURE
    P-HEV Hybrid Powertrain Control P0C76-00 HYBRID/EV BATTERY SYSTEM DISCHARGE TIME TOO LONG
    P0D2D-1C DRIVE MOTOR "A" INVERTER VOLTAGE SENSOR VOLTAGE OUT OF RANGE
    P0E31-1C BOOSTING CONVERTER VOLTAGE SENSOR "A" VOLTAGE OUT OF RANGE
    System malfunction P-HEV Drive Motor P0A90-00 DRIVE MOTOR "A" PERFORMANCE
    P0A92-00 HYBRID GENERATOR PERFORMANCE
    P0BFF-1D DRIVE MOTOR "A" CIRCUIT CURRENT OUT OF RANGE
    P0C19-00 DRIVE MOTOR "A" EXECUTION TORQUE PERFORMANCE
    P0CA3-00 DC/DC CONVERTER STEP UP VOLTAGE PERFORMANCE
    P0E71-00 GENERATOR EXECUTION TORQUE PERFORMANCE
    P1CA5-1D HYBRID GENERATOR CIRCUIT CURRENT OUT OF RANGE
    P314F-1F DC/DC CONVERTER VOLTAGE SENSOR "A" (VL) CIRCUIT INTERMITTENT
    P-HEV Hybrid Powertrain Control P3153-1D DC/DC CONVERTER CURRENT SENSOR CIRCUIT CURRENT OUT OF RANGE
    P0A93-00 INVERTER "A" COOLING SYSTEM PERFORMANCE
    P0AA6-49 HYBRID/EV BATTERY VOLTAGE SYSTEM ISOLATION INTERNAL ELECTRONIC FAILURE
    P0C73-96 MOTOR ELECTRONICS COOLANT PUMP "A" COMPONENT INTERNAL FAILURE
    P314A-31 MOTOR ELECTRONICS COOLANT PUMP "A" NO SIGNAL
    P-HEV Drive Motor P0A3F-1F DRIVE MOTOR "A" POSITION SENSOR CIRCUIT INTERMITTENT
    P0A4B-1F GENERATOR POSITION SENSOR CIRCUIT INTERMITTENT
    P0A60-1F DRIVE MOTOR "A" PHASE V CURRENT (HIGH RESOLUTION) CIRCUIT INTERMITTENT
    P0A63-1F DRIVE MOTOR "A" PHASE W CURRENT (HIGH RESOLUTION) CIRCUIT INTERMITTENT
    P0C50-1F DRIVE MOTOR "A" POSITION SENSOR CIRCUIT "A" CIRCUIT INTERMITTENT
    P0C5A-1F DRIVE MOTOR "A" POSITION SENSOR CIRCUIT "B" CIRCUIT INTERMITTENT
    P0C64-1F GENERATOR POSITION SENSOR CIRCUIT "A" CIRCUIT INTERMITTENT
    P0C69-1F GENERATOR POSITION SENSOR CIRCUIT "B" CIRCUIT INTERMITTENT
    P0D2D-1F DRIVE MOTOR "A" INVERTER VOLTAGE SENSOR(VH) CIRCUIT INTERMITTENT
    P0E31-1F DC/DC CONVERTER VOLTAGE SENSOR "A" (VL) CIRCUIT INTERMITTENT
    P1C60-1F GENERATOR CONTROL MODULE POSITION SENSOR REF POWER SOURCE CIRCUIT INTERMITTENT
    P1C62-1F GENERATOR CONTROL MODULE OFFSET POWER CIRCUIT INTERMITTENT
    P1C64-1F GENERATOR CONTROL MODULE CIRCUIT INTERMITTENT
    P1C65-1F GENERATOR CONTROL MODULE CIRCUIT INTERMITTENT
    P1C67-1F DRIVE MOTOR "A" PHASE U-V-W CURRENT SENSOR CIRCUIT INTERMITTENT
    P1C69-1F GENERATOR PHASE U-V-W CURRENT SENSOR CIRCUIT INTERMITTENT
    P3124-1F LOST COMMUNICATION BETWEEN DRIVE MOTOR "A" AND HV ECU CIRCUIT INTERMITTENT

    When "Only DTC P0A94-9E or P0D33-19 is displayed" or "DTC other than above is displayed at the same time", go to  A.

    When DTCs related to [P-HEV Hybrid Powertrain Control] mentioned above are simultaneously displayed, go to  B.

    When DTCs related to [P-HEV Drive Motor] mentioned above are simultaneously displayed, go to  C.

    When DTCs related to [P-HEV High Voltage Battery] mentioned above are simultaneously displayed, go to  D.

    Yes: 

    1. Go to  2.
    2. Perform the diagnosis for the simultaneously displayed DTCs.
      NOTE:
      • If more than one DTC is simultaneously displayed, perform the diagnosis in the order described in the above.
      • If DTC P0A94-9E is displayed, replace the Inverter with converter assembly after the repair is completed. Ref. to HYBRID ELECTRIC VEHICLE>INVERTER AND CONVERTER ASSEMBLY .
    3. Perform the diagnosis for the simultaneously displayed DTCs.
      NOTE:
      • If more than one DTC is simultaneously displayed, perform the diagnosis in the order described in the above.
      • If DTC P0A94-9E is displayed, replace the Inverter with converter assembly after the repair is completed. Ref. to HYBRID ELECTRIC VEHICLE>INVERTER AND CONVERTER ASSEMBLY .
    4. Perform the diagnosis for the simultaneously displayed DTCs.
      NOTE:
      • If more than one DTC is simultaneously displayed, perform the diagnosis in the order described in the above.
      • If DTC P0A94-9E is displayed, replace the Inverter with converter assembly after the repair is completed. Ref. to HYBRID ELECTRIC VEHICLE>INVERTER AND CONVERTER ASSEMBLY .

    No:  -

  2. CHECK FREEZE FRAME DATA AND DIAGNOSTIC RELATED INFORMATION  .
    1. Using the Subaru Select Monitor, read [Diagnosis Related Information] of [P-HEV Drive Motor]. Ref. to P-HEV DRIVE MOTOR (DIAGNOSTICS)>WORK SUPPORT .
    2. Read the DTC of [P-HEV Drive Motor] using the Subaru Select Monitor. Ref. to P-HEV DRIVE MOTOR (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) .

      When diagnostic related information DTC P3124-87 is displayed, go to  A.

      When diagnostic related information DTC P3124-87 is not displayed and freeze frame data

      [Emergency Shutdown Signal] is ON, go to  B.

      For cases other than above, go to  C.

      Yes: 

      1. Perform the diagnosis of DTC P3124-1F. Ref. to P-HEV DRIVE MOTOR (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC P3124-1F: LOST COMMUNICATION BETWEEN DRIVE MOTOR "A" AND HV ECU CIRCUIT INTERMITTENT .
      2. Perform the diagnosis of DTC P321E-9F. Ref. to P-HEV HYBRID POWERTRAIN CONTROL (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC P321E-9F: MOTOR/GENERATOR SHUTDOWN SIGNAL STUCK OFF .
      3. Go to  3.

      No:  -

  3. CHECK FREEZE FRAME DATA  .

    Using the Subaru Select Monitor, display the following items in the freeze frame data of [P-HEV Drive Motor] (DTC P0A94-9E or P0D33-19). Ref. to P-HEV DRIVE MOTOR (DIAGNOSTICS)>FREEZE FRAME DATA .

    • Boosting Converter Temperature(Upper)
    • Boosting Converter Temperature 1(Lower)

    Is the value of [Boosting Converter Temperature(Upper)] or [Boosting Converter Temperature 1(Lower)] 120°C (248°F) or more?

    Yes:  Go to  4.

    No:  Go to  5.

  4. CHECK Cooling System  .

    Check Cooling System. Ref. to P-HEV HYBRID POWERTRAIN CONTROL (DIAGNOSTICS)>DIAGNOSTICS WITH PHENOMENON>INSPECTION>COOLING SYSTEM .

    Is the Cooling System OK?

    Yes:  Go to  5.

    No:  Repair according to Cooling System inspection. And then, Go to  5.

  5. CHECK THE CONNECTING CONDITION OF CONNECTOR (Inverter with converter assembly LOW PRESSURE CONNECTOR)  .
    CAUTION: Make sure to wear insulated gloves and protective goggles during the work.
    1. Check that the Service plug is disconnected. Ref. to HYBRID ELECTRIC VEHICLE>SERVICE PLUG .
    2. Check the connecting condition of low pressure connectors (HV23) and (HV24) in Inverter with converter assembly and check the relevant terminals for contact pressure, deformation and intrusion of water or foreign matter. Ref. to HYBRID ELECTRIC VEHICLE>INVERTER AND CONVERTER ASSEMBLY .
      NOTE: When connecting the connector, insert to the end with the lock lever raised, then fold the lock lever completely until a click is heard. After connected, make sure that the lock claw does not loosen and pull the connector to see that it does not come off.

      Is there looseness at the connector connection, or any poor contact, deformation or intrusion of water or foreign matters at the relevant terminals?

      Yes:  Connect the connector securely. Or repair the poor contact of connector.

      No:  Go to  6.

  6. CHECK GENERATOR RESOLVER CIRCUIT  .

    Check GENERATOR RESOLVER CIRCUIT. Ref. to P-HEV HYBRID POWERTRAIN CONTROL (DIAGNOSTICS)>DIAGNOSTICS WITH PHENOMENON>INSPECTION>GENERATOR RESOLVER CIRCUIT .

    Is the GENERATOR RESOLVER CIRCUIT OK?

    Yes:  Go to  7.

    No:  Repair according to GENERATOR RESOLVER CIRCUIT inspection. And then, Go to  7.

  7. CHECK MOTOR RESOLVER CIRCUIT  .

    Check MOTOR RESOLVER CIRCUIT. Ref. to P-HEV HYBRID POWERTRAIN CONTROL (DIAGNOSTICS)>DIAGNOSTICS WITH PHENOMENON>INSPECTION>MOTOR RESOLVER CIRCUIT .

    Is the MOTOR RESOLVER CIRCUIT OK?

    Yes:  Go to  8.

    No:  Repair according to MOTOR RESOLVER CIRCUIT inspection. And then, Go to  8.

  8. CHECK GENERATOR HIGH-VOLTAGE CIRCUIT  .

    Check GENERATOR HIGH-VOLTAGE CIRCUIT. Ref. to P-HEV HYBRID POWERTRAIN CONTROL (DIAGNOSTICS)>DIAGNOSTICS WITH PHENOMENON>INSPECTION>GENERATOR HIGH-VOLTAGE CIRCUIT .

    Is the GENERATOR HIGH-VOLTAGE CIRCUIT OK?

    Yes:  Go to  9.

    No:  Repair according to GENERATOR HIGH-VOLTAGE CIRCUIT inspection. And then, Go to  9.

  9. CHECK MOTOR HIGH-VOLTAGE CIRCUIT  .

    Check MOTOR HIGH-VOLTAGE CIRCUIT. Ref. to P-HEV HYBRID POWERTRAIN CONTROL (DIAGNOSTICS)>DIAGNOSTICS WITH PHENOMENON>INSPECTION>MOTOR HIGH-VOLTAGE CIRCUIT .

    Is the MOTOR HIGH-VOLTAGE CIRCUIT OK?

    Yes:  Go to  10.

    No:  Repair according to MOTOR HIGH-VOLTAGE CIRCUIT inspection. And then, Go to  10.

  10. CHECK Inverter low-voltage circuit  .

    Check Inverter low-voltage circuit. Ref. to P-HEV HYBRID POWERTRAIN CONTROL (DIAGNOSTICS)>DIAGNOSTICS WITH PHENOMENON>INSPECTION>INVERTER LOW-VOLTAGE CIRCUIT .

    Is the Inverter low-voltage circuit OK?

    Yes:  Go to  11.

    No:  Repair according to Inverter low-voltage circuit inspection. Then, replace the Inverter with converter assembly. Ref. to HYBRID ELECTRIC VEHICLE>INVERTER AND CONVERTER ASSEMBLY .

  11. CHECK FREEZE FRAME DATA  .

    Using the Subaru Select Monitor, display the [Inverter Input Current] in the freeze frame data of [P-HEV Drive Motor] (DTC P0A94-9E or P0D33-19). Ref. to P-HEV DRIVE MOTOR (DIAGNOSTICS)>FREEZE FRAME DATA .

    NOTE: As the freeze frame data is stored immediately before and after the DTC is stored, the value (only "0(s)") must be read out at the moment that the DTC is stored.

    Is [Inverter Input Current] 50 A or more?

    Yes:  Replace Inverter with converter assembly. Ref. to HYBRID ELECTRIC VEHICLE>INVERTER AND CONVERTER ASSEMBLY .

    No:  Replace Inverter with converter assembly, HV battery and HV battery junction block. Ref. to HYBRID ELECTRIC VEHICLE>HYBRID POWERTRAIN CONTROL MODULE .

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