ECD SYSTEM(w/ DPF), Diagnostic DTC:P0131, P0132, P0134, P0137, P0138, P0140

DTC Code DTC Name
P0131 Oxygen Sensor Circuit Low Voltage (Bank 1 Sensor 1)
P0132 Oxygen Sensor Circuit High Voltage Bank1 Sensor1
P0134 Oxygen Sensor Circuit No Activity Detected (Bank 1 Sensor 1)
P0137 Oxygen Sensor Circuit Low Voltage (Bank 1 Sensor 2)
P0138 Oxygen Sensor Circuit High Voltage (Bank 1 Sensor 2)
P0140 Oxygen Sensor Circuit No Activity Detected (Bank 1 Sensor 2)

DESCRIPTION

Refer to DTC P0031 Click here.

Tech Tips

Although the DTC titles say oxygen sensor, these DTCs relate to the air fuel ratio sensor.

P0131
DTC Detection Drive Pattern DTC Detection Condition Trouble Area
Vehicle driving with warm engine Short to ground in air fuel ratio sensor (bank 1 sensor 1) circuit (2 trip detection logic).

  • Short in air fuel ratio sensor (bank 1 sensor 1) circuit

  • Air fuel ratio sensor (bank 1 sensor 1)

  • ECM
P0132
DTC Detection Drive Pattern DTC Detection Condition Trouble Area
Vehicle driving with warm engine Short to +B in air fuel ratio sensor (bank 1 sensor 1) (2 trip detection logic).

  • Short in air fuel ratio sensor (bank 1 sensor 1) circuit

  • Air fuel ratio sensor (bank 1 sensor 1)

  • ECM
P0134
DTC Detection Drive Pattern DTC Detection Condition Trouble Area
Vehicle driving with warm engine Open in air fuel ratio sensor (bank 1 sensor 1) circuit (2 trip detection logic).

  • Open in air fuel ratio sensor (bank 1 sensor 1) circuit

  • Air fuel ratio sensor (bank 1 sensor 1)

  • ECM
P0137
DTC Detection Drive Pattern DTC Detection Condition Trouble Area
Vehicle driving with warm engine Short to ground in air fuel ratio sensor (bank 1 sensor 2) circuit (2 trip detection logic).

  • Short in air fuel ratio sensor (bank 1 sensor 2) circuit

  • Air fuel ratio sensor (bank 1 sensor 2)

  • ECM
P0138
DTC Detection Drive Pattern DTC Detection Condition Trouble Area
Vehicle driving with warm engine Short to +B in air fuel ratio sensor (bank 1 Sensor 2) circuit (2 trip detection logic).

  • Short in air fuel ratio sensor (bank 1 sensor 2) circuit

  • Air fuel ratio sensor (bank 1 sensor 2)

  • ECM
P0140
DTC Detection Drive Pattern DTC Detection Condition Trouble Area
Vehicle driving with warm engine Open in air fuel ratio sensor (bank 1 Sensor 2) circuit (2 trip detection logic).

  • Open in air fuel ratio sensor (bank 1 sensor 2) circuit

  • Air fuel ratio sensor (bank 1 sensor 2)

  • ECM

WIRING DIAGRAM

Refer to DTC P0031 Click here.

CAUTION / NOTICE / HINT

Note


  • When replacing the ECM and/or air fuel ratio sensor, the ECM needs Registration and Initialization Click here.

  • Inspect the fuses for circuits related to this system before performing the following inspection procedure.

Tech Tips


  • When the ECM must be replaced, before replacing the ECM, perform the "Learning Values Save" function using the GTS. Then after installing a new ECM, perform all of the initialization and registration procedures for the "Learning Values Write" function by following the instructions shown on the GTS display.

  • Read freeze frame data using the GTS. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, and other data from the time the malfunction occurred.

PROCEDURE


  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0131, P0132, P0134, P0137, P0138 OR P0140)


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

    5. Read the DTCs.

      Result
      Result Proceed to
      DTC P0131, P0132 or P0134 is output A
      DTC P0137, P0138 or P0140 is output
      DTC P0131, P0132, P0134, P0137, P0138 or P0140 and other DTCs are output B

    B

    GO TO DTC CHART Click here

    A

  2. PERFORM SIMULATION TEST


    1. Interchange the connectors of air fuel ratio sensor (bank 1 sensor 1) and air fuel ratio sensor (bank 1 sensor 2) and connect them.

    2. Connect the GTS to the DLC3.

    3. Turn the ignition switch to ON.

    4. Turn the GTS on.

    5. Clear the DTCs Click here.

    6. Start the engine and warm it up until the engine coolant temperature reaches at 70°C (158°F) or higher.

    7. Allow the engine to idle for 5 minutes or more.

    8. Drive the vehicle with a stop-and-go city drive pattern for more than 15 minutes.

      CAUTION:

      When performing the confirmation driving pattern, obey all speed limits and traffic laws.

    9. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

    10. Read the DTCs.

      Result
      Result Proceed to
      Output DTC changed from DTC P0131, P0132 or P0134 to P0137, P0138 or P0140 A
      Output DTC changed from P0137, P0138 or P0140 to P0131, P0132 or P0134 B
      Output DTC does not change from P0131, P0132 or P0134 to P0137, P0138 or P0140 C
      Output DTC does not change from P0137, P0138 or P0140 to P0131, P0132 or P0134 D

      Tech Tips

      Other DTCs may be output depending on driving conditions, but check whether the air fuel ratio sensor DTC has changed.


    B

    REPLACE AIR FUEL RATIO SENSOR (BANK 1 SENSOR 2) Click here

    C

    CHECK HARNESS AND CONNECTOR (AIR FUEL RATIO SENSOR (BANK 1 SENSOR 1) - ECM) Click here

    D

    CHECK HARNESS AND CONNECTOR (AIR FUEL RATIO SENSOR (BANK 1 SENSOR 2) - ECM) Click here

    A

  3. REPLACE AIR FUEL RATIO SENSOR (BANK 1 SENSOR 1)


    1. Replace the air fuel ratio sensor (bank 1 sensor 1) Click here.

    2. Perform the A/F Sensor Compensation Reset Click here.


    NEXT

  4. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED


    1. Check that the connectors that were interchanged during the simulation test in step 2 have been returned to their original conditions.

    2. Connect the GTS to the DLC3.

    3. Turn the ignition switch to ON.

    4. Turn the GTS on.

    5. Clear the DTCs Click here.

    6. Start the engine and allow it to idle until the engine coolant temperature reaches at 70°C (158°F) or higher.

    7. Allow the engine to idle for 5 minutes or more.

    8. Drive the vehicle with a stop-and-go city drive pattern for more than 15 minutes.

      CAUTION:

      When performing the confirmation driving pattern, obey all speed limits and traffic laws.

    9. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

    10. Confirm that the DTC is not output again.


    NEXT

    END

  5. REPLACE AIR FUEL RATIO SENSOR (BANK 1 SENSOR 2)


    1. Replace the air fuel ratio sensor (bank 1 sensor 2) Click here.

    2. Perform the A/F Sensor Compensation Reset Click here.


    NEXT

  6. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED


    1. Check that the connectors that were interchanged during the simulation test in step 2 have been returned to their original conditions.

    2. Connect the GTS to the DLC3.

    3. Turn the ignition switch to ON.

    4. Turn the GTS on.

    5. Clear the DTCs Click here.

    6. Start the engine and allow it to idle until the engine coolant temperature reaches at 70°C (158°F) or higher.

    7. Allow the engine to idle for 5 minutes or more.

    8. Drive the vehicle with a stop-and-go city drive pattern for more than 15 minutes.

      CAUTION:

      When performing the confirmation driving pattern, obey all speed limits and traffic laws.

    9. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

    10. Confirm that the DTC is not output again.


    NEXT

    END

  7. CHECK HARNESS AND CONNECTOR (AIR FUEL RATIO SENSOR (BANK 1 SENSOR 1) - ECM)


    1. Disconnect the B106 air fuel ratio sensor (bank 1 sensor 1) connector.

    2. Disconnect the B104 ECM connector (for LHD).

    3. Disconnect the B103 ECM connector (for RHD).

    4. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      B106-4 (AF1+) - B104-127 (AF1+) Always Below 1 Ω
      B106-1 (AF1-) - B104-129 (AF1-) Always Below 1 Ω
      B106-3 (RE1) - B104-128 (RE1) Always Below 1 Ω
      B106-5 (HAF1) - B104-46 (HAF1) Always Below 1 Ω
      B106-4 (AF1+) or B104-127 (AF1+) - Body ground Always 10 kΩ or higher
      B106-1 (AF1-) or B104-129 (AF1-) - Body ground Always 10 kΩ or higher
      B106-3 (RE1) or B104-128 (RE1) - Body ground Always 10 kΩ or higher
      B106-5 (HAF1) or B104-46 (HAF1) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      B106-4 (AF1+) - B103-127 (AF1+) Always Below 1 Ω
      B106-1 (AF1-) - B103-129 (AF1-) Always Below 1 Ω
      B106-3 (RE1) - B103-128 (RE1) Always Below 1 Ω
      B106-5 (HAF1) - B103-46 (HAF1) Always Below 1 Ω
      B106-4 (AF1+) or B103-127 (AF1+) - Body ground Always 10 kΩ or higher
      B106-1 (AF1-) or B103-129 (AF1-) - Body ground Always 10 kΩ or higher
      B106-3 (RE1) or B103-128 (RE1) - Body ground Always 10 kΩ or higher
      B106-5 (HAF1) or B103-46 (HAF1 ) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR Click here

    OK

  8. REPLACE ECM


    1. Replace the ECM Click here.


    NEXT

  9. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED


    1. Check that the connectors that were interchanged during the simulation test in step 2 have been returned to their original conditions.

    2. Connect the GTS to the DLC3.

    3. Turn the ignition switch to ON.

    4. Turn the GTS on.

    5. Clear the DTCs Click here.

    6. Start the engine and allow it to idle until the engine coolant temperature reaches at 70°C (158°F) or higher.

    7. Allow the engine to idle for 5 minutes or more.

    8. Drive the vehicle with a stop-and-go city drive pattern for more than 15 minutes.

      CAUTION:

      When performing the confirmation driving pattern, obey all speed limits and traffic laws.

    9. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

    10. Confirm that the DTC is not output again.


    NEXT

    END

  10. CHECK HARNESS AND CONNECTOR (AIR FUEL RATIO SENSOR (BANK 1 SENSOR 2) - ECM)


    1. Disconnect the B107 air fuel ratio sensor (bank 1 sensor 2) connector.

    2. Disconnect the B104 ECM connector (for LHD).

    3. Disconnect the B103 ECM connector (for RHD).

    4. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      B107-4 (AF2+) - B104-109 (AF2+) Always Below 1 Ω
      B107-1 (AF2-) - B104-77 (AF2-) Always Below 1 Ω
      B107-3 (RE2) - B104-76 (RE2) Always Below 1 Ω
      B107-5 (HAF2) - B104-16 (HAF2) Always Below 1 Ω
      B107-4 (AF2+) or B104-109 (AF2+) - Body ground Always 10 kΩ or higher
      B107-1 (AF2-) or B104-77 (AF2-) - Body ground Always 10 kΩ or higher
      B107-3 (RE2) or B104-76 (RE2) - Body ground Always 10 kΩ or higher
      B107-5 (HAF2) or B104-16 (HAF2) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      B107-4 (AF2+) - B103-109 (AF2+) Always Below 1 Ω
      B107-1 (AF2-) - B103-77 (AF2-) Always Below 1 Ω
      B107-3 (RE2) - B103-76 (RE2) Always Below 1 Ω
      B107-5 (HAF2) - B103-16 (HAF2) Always Below 1 Ω
      B107-4 (AF2+) or B103-109 (AF2+) - Body ground Always 10 kΩ or higher
      B107-1 (AF2-) or B103-77 (AF2-) - Body ground Always 10 kΩ or higher
      B107-3 (RE2) or B103-76 (RE2) - Body ground Always 10 kΩ or higher
      B107-5 (HAF2) or B103-16 (HAF2) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR Click here

    OK

  11. REPLACE ECM


    1. Replace the ECM Click here.


    NEXT

  12. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED


    1. Check that the connectors that were interchanged during the simulation test in step 2 have been returned to their original conditions.

    2. Connect the GTS to the DLC3.

    3. Turn the ignition switch to ON.

    4. Turn the GTS on.

    5. Clear the DTCs Click here.

    6. Start the engine and allow it to idle until the engine coolant temperature reaches at 70°C (158°F) or higher.

    7. Allow the engine to idle for 5 minutes or more.

    8. Drive the vehicle with a stop-and-go city drive pattern for more than 15 minutes.

      CAUTION:

      When performing the confirmation driving pattern, obey all speed limits and traffic laws.

    9. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

    10. Confirm that the DTC is not output again.


    NEXT

    END

  13. REPAIR OR REPLACE HARNESS OR CONNECTOR


    NEXT

  14. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED


    1. Check that the connectors that were interchanged during the simulation test in step 2 have been returned to their original conditions.

    2. Connect the GTS to the DLC3.

    3. Turn the ignition switch to ON.

    4. Turn the GTS on.

    5. Clear the DTCs Click here.

    6. Start the engine and allow it to idle until the engine coolant temperature reaches at 70°C (158°F) or higher.

    7. Allow the engine to idle for 5 minutes or more.

    8. Drive the vehicle with a stop-and-go city drive pattern for more than 15 minutes.

      CAUTION:

      When performing the confirmation driving pattern, obey all speed limits and traffic laws.

    9. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

    10. Confirm that the DTC is not output again.


    NEXT

    END