SFI SYSTEM, Diagnostic DTC:P223711, P223712, P223714, P223716, P223717, P22371A, P224011, P224012, P224014, P224016, P224017, P22401A, P225111, P225112, P225411, P225412

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
P224011 O2 Sensor Positive Current Control Bank 2 Sensor 1 Circuit Short to Ground
P224012 O2 Sensor Positive Current Control Bank 2 Sensor 1 Circuit Short to Battery
P224014 O2 Sensor Positive Current Control Bank 2 Sensor 1 Circuit Short to Ground or Open
P224016 O2 Sensor Positive Current Control Bank 2 Sensor 1 Circuit Voltage Below Threshold
P224017 O2 Sensor Positive Current Control Bank 2 Sensor 1 Circuit Voltage Above Threshold
P22401A O2 Sensor Positive Current Control Bank 2 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
P225411 O2 Sensor Negative Current Control Bank 2 Sensor 1 Circuit Short to Ground
P225412 O2 Sensor Negative Current Control Bank 2 Sensor 1 Circuit Short to Battery

DESCRIPTION

Refer to DTC P21951D.

Click here

Tech Tips

Although the DTC titles say O2 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 The A1A+ voltage is 0.5 V or less for 5 seconds or more (2 trip detection logic).

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

  • Air fuel ratio sensor (bank 1 sensor 1)

  • ECM

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

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

  • Air fuel ratio sensor (bank 1 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 (bank 1 sensor 1) circuit

  • Air fuel ratio sensor (bank 1 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 between 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 (bank 1 sensor 1) circuit

  • Air fuel ratio sensor (bank 1 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 between 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 (bank 1 sensor 1) circuit

  • Air fuel ratio sensor (bank 1 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 (bank 1 sensor 1) circuit

  • Air fuel ratio sensor (bank 1 sensor 1)

  • ECM

 Comes on DTC stored SAE Code: P2238
P224011 O2 Sensor Positive Current Control Bank 2 Sensor 1 Circuit Short to Ground The A2A+ voltage is 0.5 V or less for 5 seconds or more (2 trip detection logic).

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

  • Air fuel ratio sensor (bank 2 sensor 1)

  • ECM

 Comes on DTC stored SAE Code: P2241
P224012 O2 Sensor Positive Current Control Bank 2 Sensor 1 Circuit Short to Battery The A2A+ voltage is higher than 4.5 V for 5 seconds or more (2 trip detection logic).

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

  • Air fuel ratio sensor (bank 2 sensor 1)

  • ECM

 Comes on DTC stored SAE Code: P2242
P224014 O2 Sensor Positive Current Control Bank 2 Sensor 1 Circuit Short to Ground or Open An open or ground short in the circuit between terminals A2A+ and A2A- of the air fuel ratio sensor while the engine is running (2 trip detection logic).

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

  • Air fuel ratio sensor (bank 2 sensor 1)

  • ECM

 Comes on DTC stored SAE Code: P2240
P224016 O2 Sensor Positive Current Control Bank 2 Sensor 1 Circuit Voltage Below Threshold Difference between terminals A2A+ and A2A- is 0.1 V or less for 5 seconds or more (2 trip detection logic).

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

  • Air fuel ratio sensor (bank 2 sensor 1)

  • ECM

 Comes on DTC stored SAE Code: P2241
P224017 O2 Sensor Positive Current Control Bank 2 Sensor 1 Circuit Voltage Above Threshold Difference between terminals A2A+ and A2A- is higher than 0.8 V for 5 seconds or more (2 trip detection logic).

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

  • Air fuel ratio sensor (bank 2 sensor 1)

  • ECM

 Comes on DTC stored SAE Code: P2242
P22401A O2 Sensor Positive Current Control Bank 2 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 (bank 2 sensor 1) circuit

  • Air fuel ratio sensor (bank 2 sensor 1)

  • ECM

 Comes on DTC stored SAE Code: P2241
P225111 O2 Sensor Negative Current Control Bank 1 Sensor 1 Circuit Short to Ground The A1A- voltage is 0.5 V or less for 5 seconds or more (2 trip detection logic).

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

  • Air fuel ratio sensor (bank 1 sensor 1)

  • ECM

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

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

  • Air fuel ratio sensor (bank 1 sensor 1)

  • ECM

 Comes on DTC stored SAE Code: P2253
P225411 O2 Sensor Negative Current Control Bank 2 Sensor 1 Circuit Short to Ground The A2A- voltage is 0.5 V or less for 5 seconds or more (2 trip detection logic).

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

  • Air fuel ratio sensor (bank 2 sensor 1)

  • ECM

 Comes on DTC stored SAE Code: P2255
P225412 O2 Sensor Negative Current Control Bank 2 Sensor 1 Circuit Short to Battery The A2A- voltage is higher than 4.5 V for 5 seconds or more (2 trip detection logic).

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

  • Air fuel ratio sensor (bank 2 sensor 1)

  • ECM

 Comes on DTC stored SAE Code: P2256

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 turning the engine switch 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

Related DTCs

P2237: Air fuel ratio sensor (bank 1) open circuit between A1A+ and A1A-

P2238: Air fuel ratio sensor (bank 1) low admittance

P2238: Air fuel ratio sensor (bank 1) short circuit between A1A+ and GND

P2238: Air fuel ratio sensor (bank 1) short circuit between A1A+ and A1A-

P2239: Air fuel ratio sensor (bank 1) short circuit between A1A+ and +B

P2239: Air fuel ratio sensor (bank 1) short circuit between A1A+ and A1A-

P2240: Air fuel ratio sensor (bank 2) open circuit between A2A+ and A2A-

P2241: Air fuel ratio sensor (bank 2) low admittance

P2241: Air fuel ratio sensor (bank 2) short circuit between A2A+ and GND

P2241: Air fuel ratio sensor (bank 2) short circuit between A2A+ and A2A-

P2242: Air fuel ratio sensor (bank 2) short circuit between A2A+ and +B

P2242: Air fuel ratio sensor (bank 2) short circuit between A2A+ and A2A-

P2252: Air fuel ratio sensor (bank 1) short circuit between A1A- and GND

P2253: Air fuel ratio sensor (bank 1) short circuit between A1A- and +B

P2255: Air fuel ratio sensor (bank 2) short circuit between A2A- and GND

P2256: Air fuel ratio sensor (bank 2) short circuit between A2A- and +B
Required Sensors/Components (Main) Air fuel ratio sensor
Required Sensors/Components (Related)

Engine coolant temperature sensor

Crankshaft position sensor
Frequency of Operation Continuous
Duration

10 seconds: P2237 and P2240

10 seconds: P2238 and P2241 (air fuel ratio sensor low admittance)

5 seconds: Others
MIL Operation 2 driving cycles
Sequence of Operation None

TYPICAL ENABLING CONDITIONS

P2237, P2238, P2240 and P2241
Monitor runs whenever the following DTCs are not stored

P0010, P0020 (VVT oil control solenoid bank 1, 2)

P0011, P0021 (VVT system bank 1, 2 - advance)

P0012, P0022 (VVT system bank 1, 2 - retard)

P0013, P0023 (Exhaust VVT oil control solenoid bank 1, 2)

P0014, P0024 (Exhaust VVT system bank 1, 2 - advance)

P0015, P0025 (Exhaust VVT system bank 1, 2 - retard)

P0016, P0018 (VVT system bank 1, 2 - misalignment)

P0017, P0019 (Exhaust VVT system bank 1, 2 - misalignment)

P0031, P0032, P0051, P0052, P101D, P103D (Air fuel ratio sensor heater)

P0037, P0038, P0057, P0058, P0141, P0161, P102D, P105D (Heated oxygen sensor heater)

P0087, P0088, P0191, P0192, P0193 (Fuel pressure sensor (for high pressure side))

P0101, P0102, P0103 (Mass air flow meter)

P0111, P0112, P0113 (Intake air temperature sensor)

P0116, P0117, P0118 (Engine coolant temperature sensor)

P011B (Engine coolant temperature/intake air temperature sensor correlation)

P0121, P0122, P0123, P0222, P0223, P2135 (Throttle position sensor)

P0125 (Insufficient coolant temperature for closed loop fuel control)

P0128 (Thermostat)

P0136, P0137, P0138, P0139, P013A, P013C, P0156, P0157, P0158, P0159, P0607 (Heated oxygen sensor)

P0171, P0172, P0174, P0175 (Fuel system)

P0201, P0202, P0203, P0204, P0205, P0206, P062D, P21CF, P21D0, P21D1, P21D2, P21D3, P21D4 (Fuel injector)

P0300 - P0306 (Misfire)

P0327, P0328, P0332, P0333 (Knock control sensor)

P0335, P0337, P0338 (Crankshaft position sensor)

P0340, P0342, P0343, P0345, P0347, P0348 (Camshaft position sensor)

P0351 - P0356 (Igniter)

P0365, P0367, P0368, P0390, P0392, P0393 (Exhaust camshaft position sensor)

P0441 (EVAP system)

P0500 (Vehicle speed sensor)

P0657, P2102, P2103, P2111, P2112, P2119 (Throttle actuator)

P107B, P107C, P107D (Fuel pressure sensor (for low pressure side))

P11EA, P11EB, P11EC, P11ED, P11EE, P11EF, P11F0, P11F1, P219A, P219B, P219C, P219D, P219E, P219F, P21A0, P21A1 (Air-fuel ratio imbalance)

P1235 (High pressure fuel pump circuit)
P2239, P2242, P2252, P2253, P2255 and P2256
Monitor runs whenever the following DTCs are not stored None
P2237 and P2240: Open Circuit Between A1A+ and A1A- / A2A+ and A2A-
Estimated sensor temperature 450 to 550°C (842 to 1022°F)
Engine Running
Battery voltage 11 V or higher
Engine switch On (IG)
Time after engine switch is off to on (IG) 5 seconds or more
P2238 and P2241: Low Admittance
Estimated sensor temperature 700 to 800°C (1292 to 1472°F)
Engine coolant temperature 5°C (41°F) or higher (varies with engine speed)
Fuel cut Not executed
Others
Battery voltage 10.5 V or higher
Engine switch On (IG)
Time after engine switch is off to on (IG) 5 seconds or more

TYPICAL MALFUNCTION THRESHOLDS

P2237 and P2240: Open Circuit Between A1A+ and A1A- / A2A+ and A2A-
Air fuel ratio sensor admittance Less than 0.0018 1/Ω
P2238 and P2241: Low Admittance
Air fuel ratio sensor admittance Less than 0.0054 1/Ω
P2238 and P2241: Short Circuit Between A1A+ and GND / A2A+ and GND
A1A+ / A2A+ terminal voltage 0.5 V or less
P2238 and P2241: Short Circuit Between A1A+ and A1A- / A2A+ and A2A-
Difference between A1A+ and A1A- / A2A+ and A2A- terminal voltage 0.1 V or less
P2239 and P2242: Short Circuit Between A1A+ and +B / A2A+ and +B
A1A+ / A2A+ terminal voltage Higher than 4.5 V
P2239 and P2242: Short Circuit Between A1A+ and A1A- / A2A+ and A2A-
Difference between A1A+ and A1A- / A2A+ and A2A- terminal voltage Higher than 0.8 V
P2252 and P2255: Short Circuit Between A1A- and GND / A2A- and GND
A1A- / A2A- terminal voltage 0.5 V or less
P2253 and P2256: Short Circuit Between A1A- and +B / A2A- and +B
A1A- / A2A- terminal voltage Higher than 4.5 V

CONFIRMATION DRIVING PATTERN


  1. Connect the GTS to the DLC3.

  2. Turn the engine 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 engine switch off and wait for at least 30 seconds.

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

  7. Turn the GTS on.

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

  9. 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.

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

  11. Input the DTC: P223711, P223712, P223714, P223716, P223717, P22371A, P224011, P224012, P224014, P224016, P224017, P22401A, P225111, P225112, P225411 or P225412.

  12. 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

    Tech Tips


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

    • If the judgment result is ABNORMAL, the system has a malfunction.

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

WIRING DIAGRAM

Refer to DTC P21951D.

Click here

CAUTION / NOTICE / HINT

Note

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

Tech Tips


  • Bank 1 refers to the bank that includes the No. 1 cylinder*.

    *: The No. 1 cylinder is the cylinder which is farthest from the transaxle.

  • Bank 2 refers to the bank that does not include the No. 1 cylinder.

  • 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].

    Click here

  • 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)

    B006ZZDC02
    *a

    Front view of wire harness connector

    (to Air Fuel Ratio Sensor)

    		 *b Bank 1
    *c Bank 2 - -

    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 engine switch on (IG).

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      C102-3 (A1A+) - Body ground Engine switch on (IG) 3.2 to 3.4 V
      C102-4 (A1A-) - Body ground Engine switch on (IG) 2.8 to 3.0 V
      C102-3 (A1A+) - C102-4 (A1A-) Engine switch on (IG) 0.2 to 0.6 V
      C51-3 (A2A+) - Body ground Engine switch on (IG) 3.2 to 3.4 V
      C51-4 (A2A-) - Body ground Engine switch on (IG) 2.8 to 3.0 V
      C51-3 (A2A+) - C51-4 (A2A-) Engine switch on (IG) 0.2 to 0.6 V

      Tech Tips

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

      Click here

      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
      C102-1 (HA1A) - C96-52 (HA1A) Always Below 1 Ω
      C102-3 (A1A+) - C96-125 (A1A+) Always Below 1 Ω
      C102-4 (A1A-) - C96-126 (A1A-) Always Below 1 Ω
      C51-1 (HA2A) - C96-17 (HA2A) Always Below 1 Ω
      C51-3 (A2A+) - C96-123 (A2A+) Always Below 1 Ω
      C51-4 (A2A-) - C96-124 (A2A-) Always Below 1 Ω
      C102-1 (HA1A) or C96-52 (HA1A) - Body ground and other terminals Always 10 kΩ or higher
      C102-3 (A1A+) or C96-125 (A1A+) - Body ground and other terminals Always 10 kΩ or higher
      C102-4 (A1A-) or C96-126 (A1A-) - Body ground and other terminals Always 10 kΩ or higher
      C51-1 (HA2A) or C96-17 (HA2A) - Body ground and other terminals Always 10 kΩ or higher
      C51-3 (A2A+) or C96-123 (A2A+) - Body ground and other terminals Always 10 kΩ or higher
      C51-4 (A2A-) or C96-124 (A2A-) - 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