SFI SYSTEM(w/ Canister Pump Module), Diagnostic DTC:P223711, P223712, P223714, P223716, P223717, P22371A, P225111, P225112

DTC Code DTC Name
P223711 O2 Sensor Positive Current Control Bank 1 Sensor 1 Circuit Short to Ground
P223712 O2 Sensor Positive Current Control Bank 1 Sensor 1 Circuit Short to Battery
P223714 O2 Sensor Positive Current Control Bank 1 Sensor 1 Circuit Short to Ground or Open
P223716 O2 Sensor Positive Current Control Bank 1 Sensor 1 Circuit Voltage Below Threshold
P223717 O2 Sensor Positive Current Control Bank 1 Sensor 1 Circuit Voltage Above Threshold
P22371A O2 Sensor Positive Current Control Bank 1 Sensor 1 Circuit Resistance Below Threshold
P225111 O2 Sensor Negative Current Control Bank 1 Sensor 1 Circuit Short to Ground
P225112 O2 Sensor Negative Current Control Bank 1 Sensor 1 Circuit Short to Battery

DESCRIPTION

Refer to DTC P21951D.

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Tech Tips

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

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P223711 O2 Sensor Positive Current Control Bank 1 Sensor 1 Circuit Short to Ground Voltage at terminal A1A+ of the ECM is 0.5 V or less for 5 seconds or more (2 trip detection logic).

  • Open or short in air fuel ratio sensor (sensor 1) circuit

  • Air fuel ratio sensor (sensor 1)

  • ECM

 Comes on DTC stored SAE Code: P2238
P223712 O2 Sensor Positive Current Control Bank 1 Sensor 1 Circuit Short to Battery Voltage at terminal A1A+ of the ECM is higher than 4.5 V for 5 seconds or more (2 trip detection logic).

  • Open or short in air fuel ratio sensor (sensor 1) circuit

  • Air fuel ratio sensor (sensor 1)

  • ECM

 Comes on DTC stored SAE Code: P2239
P223714 O2 Sensor Positive Current Control Bank 1 Sensor 1 Circuit Short to Ground or Open An open or ground short in the circuit between terminals A1A+ and A1A- of the air fuel ratio sensor while the engine is running (2 trip detection logic).

  • Open or short in air fuel ratio sensor (sensor 1) circuit

  • Air fuel ratio sensor (sensor 1)

  • ECM

 Comes on DTC stored SAE Code: P2237
P223716 O2 Sensor Positive Current Control Bank 1 Sensor 1 Circuit Voltage Below Threshold Difference in voltage between at terminals A1A+ and A1A- is 0.1 V or less for 5 seconds or more (2 trip detection logic).

  • Open or short in air fuel ratio sensor (sensor 1) circuit

  • Air fuel ratio sensor (sensor 1)

  • ECM

 Comes on DTC stored SAE Code: P2238
P223717 O2 Sensor Positive Current Control Bank 1 Sensor 1 Circuit Voltage Above Threshold Difference in voltage between at terminals A1A+ and A1A- is higher than 0.8 V for 5 seconds or more (2 trip detection logic).

  • Open or short in air fuel ratio sensor (sensor 1) circuit

  • Air fuel ratio sensor (sensor 1)

  • ECM

 Comes on DTC stored SAE Code: P2239
P22371A O2 Sensor Positive Current Control Bank 1 Sensor 1 Circuit Resistance Below Threshold The air fuel ratio sensor admittance is less than 0.0054 1/Ω (2 trip detection logic).

  • Open or short in air fuel ratio sensor (sensor 1) circuit

  • Air fuel ratio sensor (sensor 1)

  • ECM

 Comes on DTC stored SAE Code: P2238
P225111 O2 Sensor Negative Current Control Bank 1 Sensor 1 Circuit Short to Ground Voltage at terminal A1A- of the ECM is 0.5 V or less for 5 seconds or more (2 trip detection logic).

  • Open or short in air fuel ratio sensor (sensor 1) circuit

  • Air fuel ratio sensor (sensor 1)

  • ECM

 Comes on DTC stored SAE Code: P2252
P225112 O2 Sensor Negative Current Control Bank 1 Sensor 1 Circuit Short to Battery Voltage at terminal A1A- of the ECM is higher than 4.5 V for 5 seconds or more (2 trip detection logic).

  • Open or short in air fuel ratio sensor (sensor 1) circuit

  • Air fuel ratio sensor (sensor 1)

  • ECM

 Comes on DTC stored SAE Code: P2253

MONITOR DESCRIPTION

These DTCs are output when there is an open or short in the air fuel ratio sensor circuit, or if the air fuel ratio sensor output drops. To detect these problems, the voltage of the air fuel ratio sensor is monitored when the power switch is turned on (IG), and the admittance (admittance is an electrical term that indicates the ease of flow of current) is checked while driving. If the voltage of the air fuel ratio sensor is between 0.5 V and 4.5 V, it is considered normal. If the voltage is out of the specified range, or the admittance is less than the standard value, the ECM determines that there is a malfunction in the air fuel ratio sensor. If the same malfunction is detected in the next driving cycle, the ECM will illuminate the MIL and store a DTC.

MONITOR STRATEGY

Required Sensors/Components Air fuel ratio sensor
Frequency of Operation Continuous

CONFIRMATION DRIVING PATTERN


  1. Connect the GTS to the DLC3.

  2. Turn the power switch on (IG).

  3. Turn the GTS on.

  4. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

  5. Turn the power switch off and wait for at least 30 seconds.

  6. Turn the power switch on (IG).

  7. Turn the GTS on.

  8. Put the engine in Inspection Mode (Maintenance Mode).

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  9. Start the engine and wait 5 minutes or more.

  10. Enter the following menus: Powertrain / Engine / Trouble Codes.

  11. Read the pending DTCs.

    Tech Tips


    • If a pending DTC is output, the system is malfunctioning.

    • If a pending DTC is not output, perform the following procedure.

  12. Enter the following menus: Powertrain / Engine / Utility / All Readiness.

  13. Input the DTC: P223711, P223712, P223714, P223716, P223717, P22371A, P225111 or P225112.

  14. Check the DTC judgment result.

    GTS Display Description
    NORMAL

    • DTC judgment completed

    • System normal
    ABNORMAL

    • DTC judgment completed

    • System abnormal
    INCOMPLETE

    • DTC judgment not completed

    • Perform driving pattern after confirming DTC enabling conditions
    N/A

    • Unable to perform DTC judgment

    • Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit

    Tech Tips


    • If the judgment result is NORMAL, the system is normal.

    • If the judgment result is ABNORMAL, the system is malfunctioning.

    • If the judgment result is INCOMPLETE or N/A, idle the engine for 5 minutes and check the DTC judgment result again.

WIRING DIAGRAM

Refer to DTC P21951D.

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CAUTION / NOTICE / HINT

Note

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

Tech Tips


  • Sensor 1 refers to the sensor closest to the engine assembly.

  • Sensor 2 refers to the sensor farthest away from the engine assembly.

  • Refer to "Data List / Active Test" [A/F (O2) Sensor Voltage B1S1].

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  • Read freeze frame data using the GTS. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

PROCEDURE


  1. CHECK TERMINAL VOLTAGE (AIR FUEL RATIO SENSOR VOLTAGE)

    Tech Tips

    Make sure that the connector is properly connected. If it is not, securely connect it and check for DTCs again.


    1. Disconnect the air fuel ratio sensor connector.

    2. Turn the power switch on (IG).

    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition
      C24-3 (A1A+) - Body ground Power switch on (IG) 3.2 to 3.4 V
      C24-4 (A1A-) - Body ground Power switch on (IG) 2.8 to 3.0 V
      C24-3 (A1A+) - C24-4 (A1A-) Power switch on (IG) 0.2 to 0.6 V

      Tech Tips

      Perform "Inspection After Repair" after replacing the air fuel ratio sensor.

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      Result
      Proceed to
      OK
      NG

    OK

    REPLACE AIR FUEL RATIO SENSOR Click here

    NG

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


    1. Disconnect the air fuel ratio sensor connector.

    2. Disconnect the ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      C24-1 (HA1A) - C31-27 (HA1A) Always Below 1 Ω
      C24-3 (A1A+) - C31-100 (A1A+) Always Below 1 Ω
      C24-4 (A1A-) - C31-132 (A1A-) Always Below 1 Ω
      C24-1 (HA1A) or C31-27 (HA1A) - Body ground and other terminals Always 10 kΩ or higher
      C24-3 (A1A+) or C31-100 (A1A+) - Body ground and other terminals Always 10 kΩ or higher
      C24-4 (A1A-) or C31-132 (A1A-) - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE ECM Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR