Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM100000001GJ7D
Model Year Start: 2020 Model: Corolla Prod Date Range: [01/2019 - 04/2020]
Title: 2ZR-FXE (ENGINE CONTROL): SFI SYSTEM: P223711,P223712,P223713,P223716,P223717,P22371B,P225111,P225112; A/F (O2) Sensor Positive Current Control Bank 1 Sensor 1 Circuit Short to Ground; 2020 MY Corolla Corolla HV [01/2019 - 04/2020]

DTC

P223711

A/F (O2) Sensor Positive Current Control Bank 1 Sensor 1 Circuit Short to Ground

DTC

P223712

A/F (O2) Sensor Positive Current Control Bank 1 Sensor 1 Circuit Short to Battery

DTC

P223713

A/F (O2) Sensor Positive Current Control Bank 1 Sensor 1 Circuit Open

DTC

P223716

A/F (O2) Sensor Positive Current Control Bank 1 Sensor 1 Circuit Voltage Below Threshold

DTC

P223717

A/F (O2) Sensor Positive Current Control Bank 1 Sensor 1 Circuit Voltage Above Threshold

DTC

P22371B

A/F (O2) Sensor Positive Current Control Bank 1 Sensor 1 Circuit Resistance Above Threshold

DTC

P225111

O2 Sensor Negative Current Control Bank 1 Sensor 1 Circuit Short to Ground

DTC

P225112

O2 Sensor Negative Current Control Bank 1 Sensor 1 Circuit Short to Battery

DESCRIPTION

Refer to DTC P219519.

Click here 2020 MY Corolla Corolla HV [01/2019 - 04/2020]; 2ZR-FXE (ENGINE CONTROL): SFI SYSTEM: P219519,P219524,P219618,P219623; A/F (O2) Sensor Signal Biased/Stuck Lean Bank 1 Sensor 1 Circuit Current Above Threshold+

HINT:

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

A/F (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).

  • Short in air fuel ratio sensor (sensor 1) circuit
  • Air fuel ratio sensor (sensor 1)
  • ECM

Comes on

DTC stored

  • SAE Code: P2238
  • DTC for Mexico Models: Applies

P223712

A/F (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
  • DTC for Mexico Models: Applies

P223713

A/F (O2) Sensor Positive Current Control Bank 1 Sensor 1 Circuit 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
  • DTC for Mexico Models: Applies

P223716

A/F (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
  • DTC for Mexico Models: Applies

P223717

A/F (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
  • DTC for Mexico Models: Applies

P22371B

A/F (O2) Sensor Positive Current Control Bank 1 Sensor 1 Circuit Resistance Above 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
  • DTC for Mexico Models: Does not apply

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).

  • Short in air fuel ratio sensor (sensor 1) circuit
  • Air fuel ratio sensor (sensor 1)
  • ECM

Comes on

DTC stored

  • SAE Code: P2252
  • DTC for Mexico Models: Applies

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
  • DTC for Mexico Models: Applies

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

Related DTCs

P2237: Air fuel ratio sensor open circuit between A1A+ and A1A-

P2238: Air fuel ratio sensor low admittance

P2238: Air fuel ratio sensor short circuit between A1A+ and GND

P2238: Air fuel ratio sensor short circuit between A1A+ and A1A-

P2239: Air fuel ratio sensor short circuit between A1A+ and +B

P2239: Air fuel ratio sensor short circuit between A1A+ and A1A-

P2252: Air fuel ratio sensor short circuit between A1A- and GND

P2253: Air fuel ratio sensor short circuit between A1A- 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, P2238 (air fuel ratio sensor low admittance)

5 seconds: Others

MIL Operation

2 driving cycles

Sequence of Operation

None

TYPICAL ENABLING CONDITIONS

P2237 and P2238

Monitor runs whenever the following DTCs are not stored

P0010 (Camshaft timing oil control valve)

P0011 (VVT system - advance)

P0012 (VVT system - retard)

P0016 (VVT system - misalignment)

P0031, P0032, P101D (Air fuel ratio sensor heater)

P0037, P0038, P0141, P102D (Heated oxygen sensor heater)

P0101, P0102, P0103 (Mass air flow meter)

P0106, P0107, P0108 (Manifold absolute pressure)

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, P0607 (Heated oxygen sensor)

P0171, P0172 (Fuel system)

P0300 - P0304 (Misfire)

P0327, P0328 (Knock control sensor)

P0335 (Crankshaft position sensor)

P0340, P0342, P0343 (Camshaft position sensor)

P0351 - P0354 (Igniter)

P0400 (EGR system)

P0401 (EGR system (closed))

P0403 (EGR control circuit)

P0441 (EVAP system)

P0657, P0658, P2102, P2103, P2111, P2112, P2119 (Throttle actuator)

P219A, P219C, P219D, P219E, P219F (Air-fuel ratio imbalance)

P2228, P2229 (Atmospheric pressure sensor)

P2237: Open Circuit Between A1A+ and A1A-

Estimated sensor temperature

450 to 550°C (842 to 1022°F)

Engine

Running

Auxiliary battery voltage

11 V or higher

Power switch

On (IG)

Time after power switch is off to on (IG)

5 seconds or more

Air fuel ratio imbalance of clogged EGR runner fail (P10AA)

Not set

P2238: 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 coolant temperature at engine start)

Fuel cut

Not executed

Air fuel ratio imbalance of clogged EGR runner fail (P10AA)

Not set

Others

All of the following conditions are met

-

Auxiliary battery voltage

10.5 V or higher

Power switch

On (IG)

Time after power switch is off to on (IG)

5 seconds or more

Air fuel ratio imbalance of clogged EGR runner fail (P10AA)

Not set

TYPICAL MALFUNCTION THRESHOLDS

P2237: Open Circuit Between A1A+ and A1A-

Air fuel ratio sensor admittance

Less than 0.0018 1/Ω

P2238: Low Admittance

Air fuel ratio sensor admittance

Less than 0.0054 1/Ω

P2238: Short Circuit Between A1A+ and GND

A1A+ terminal voltage

0.5 V or less

P2238: Short Circuit Between A1A+ and A1A-

Difference between A1A+ terminal and A1A- terminal voltage

0.1 V or less

P2239: Short Circuit Between A1A+ and +B

A1A+ terminal voltage

Higher than 4.5 V

P2239: Short Circuit Between A1A+ and A1A-

Difference between A1A+ terminal and A1A- terminal voltage

Higher than 0.8 V

P2252: Short Circuit Between A1A- and GND

A1A- terminal voltage

0.5 V or less

P2253: Short Circuit Between A1A- and +B

A1A- terminal voltage

Higher than 4.5 V

CONFIRMATION DRIVING PATTERN

HINT:

  • After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.

    Click here 2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; 2ZR-FXE (ENGINE CONTROL): SFI SYSTEM: DTC CHECK / CLEAR

  • When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.

    Click here 2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; 2ZR-FXE (ENGINE CONTROL): SFI SYSTEM: DTC CHECK / CLEAR

  1. Connect the Techstream to the DLC3.
  2. Turn the power switch on (IG).
  3. Turn the Techstream 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 Techstream on.
  8. Put the engine in Inspection Mode (Maintenance Mode).

    Click here 2019 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [06/2018 -        ]; INTRODUCTION: REPAIR INSTRUCTION: INSPECTION MODE PROCEDURE

  9. Start the engine and wait 5 minutes or more [A].
  10. Enter the following menus: Powertrain / Engine / Trouble Codes [B].
  11. Read the pending DTCs.

    HINT:

    • 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, P223713, P223716, P223717, P22371B, P225111 or P225112.
  14. Check the DTC judgment result.

    Techstream 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

    HINT:

    • 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.
    • [A] to [B]: Normal judgment procedure.

      The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.

    • When clearing the permanent DTCs, do not disconnect the cable from the auxiliary battery terminal or attempt to clear the DTCs during this procedure, as doing so will clear the universal trip and normal judgment histories.

WIRING DIAGRAM

Refer to DTC P219519.

Click here 2020 MY Corolla Corolla HV [01/2019 - 04/2020]; 2ZR-FXE (ENGINE CONTROL): SFI SYSTEM: P219519,P219524,P219618,P219623; A/F (O2) Sensor Signal Biased/Stuck Lean Bank 1 Sensor 1 Circuit Current Above Threshold+

CAUTION / NOTICE / HINT

NOTICE:

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

HINT:

  • 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 2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; 2ZR-FXE (ENGINE CONTROL): SFI SYSTEM: DATA LIST / ACTIVE TEST

  • Read freeze frame data using the Techstream. 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)

*a

Front view of wire harness connector

(to Air Fuel Ratio Sensor)

HINT:

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

(a) Disconnect the air fuel ratio sensor connector.

(b) Turn the power switch on (IG).

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

C55-3 (A1A+) - Body ground

Power switch on (IG)

3.2 to 3.4 V

C55-4 (A1A-) - Body ground

Power switch on (IG)

2.8 to 3.0 V

C55-3 (A1A+) - C55-4 (A1A-)

Power switch on (IG)

0.2 to 0.6 V

HINT:

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

Click here 2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; 2ZR-FXE (ENGINE CONTROL): SFI SYSTEM: INITIALIZATION

OK

REPLACE AIR FUEL RATIO SENSOR

NG

2.

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

(a) Disconnect the air fuel ratio sensor connector.

(b) Disconnect the ECM connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

C55-1 (HA1A) - C77-27 (HA1A)

Always

Below 1 Ω

C55-3 (A1A+) - C77-100 (A1A+)

Always

Below 1 Ω

C55-4 (A1A-) - C77-132 (A1A-)

Always

Below 1 Ω

C55-1 (HA1A) or C77-27 (HA1A) - Body ground and other terminals

Always

10 kΩ or higher

C55-3 (A1A+) or C77-100 (A1A+) - Body ground and other terminals

Always

10 kΩ or higher

C55-4 (A1A-) or C77-132 (A1A-) - Body ground and other terminals

Always

10 kΩ or higher

OK

REPLACE ECM

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR