Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM1000000026VFA
Model Year Start: 2023 Model: Corolla Prod Date Range: [09/2022 -           ]
Title: 2ZR-FXE (ENGINE CONTROL): SFI SYSTEM: P22AB12,P22AB14,P22AB1A,P22B211,P22B212; A/F (O2) Sensor Positive Current Control Bank 1 Sensor 2 Circuit Short to Battery; 2023 - 2025 MY Corolla Corolla HV [09/2022 -        ]

DTC

P22AB12

A/F (O2) Sensor Positive Current Control Bank 1 Sensor 2 Circuit Short to Battery

DTC

P22AB14

A/F (O2) Sensor Positive Current Control Bank 1 Sensor 2 Circuit Short to Ground or Open

DTC

P22AB1A

A/F (O2) Sensor Positive Current Control Bank 1 Sensor 2 Circuit Resistance Below Threshold

DTC

P22B211

A/F (O2) Sensor Negative Current Control Bank 1 Sensor 2 Circuit Short to Ground

DTC

P22B212

A/F (O2) Sensor Negative Current Control Bank 1 Sensor 2 Circuit Short to Battery

DESCRIPTION

Refer to DTC P003612.

Click here 2023 - 2025 MY Corolla Corolla HV [09/2022 -        ]; 2ZR-FXE (ENGINE CONTROL): SFI SYSTEM: P003612,P003613,P014118,P102A9E; HO2S Heater Control Circuit Bank 1 Sensor 2 Circuit Short to Battery+

HINT:

Although the DTC titles say O2 sensor, these DTCs relate to the heated oxygen sensor.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

Note

P22AB12

A/F (O2) Sensor Positive Current Control Bank 1 Sensor 2 Circuit Short to Battery

The OX1B voltage is higher than 3.20 V for 5 seconds or more (2 trip detection logic).

  • Open or short in heated oxygen sensor circuit
  • Heated oxygen sensor
  • ECM

Comes on

DTC stored

  • SAE Code: P22AD
  • DTC for Mexico Models: Applies

P22AB14

A/F (O2) Sensor Positive Current Control Bank 1 Sensor 2 Circuit Short to Ground or Open

The OX1B voltage is 1.70 V or less for 5 seconds or more (2 trip detection logic).

  • Open or short in heated oxygen sensor circuit
  • Heated oxygen sensor
  • ECM

Comes on

DTC stored

  • SAE Code: P22AC
  • DTC for Mexico Models: Applies

P22AB1A

A/F (O2) Sensor Positive Current Control Bank 1 Sensor 2 Circuit Resistance Below Threshold

5 seconds or more elapse after the heated oxygen sensor heater turns on and the heated oxygen sensor impedance is less than 12 Ω (2 trip detection logic).

  • Open or short in heated oxygen sensor circuit
  • Heated oxygen sensor
  • ECM

Comes on

DTC stored

  • SAE Code: P22AC
  • DTC for Mexico Models: Applies

P22B211

A/F (O2) Sensor Negative Current Control Bank 1 Sensor 2 Circuit Short to Ground

The E2 voltage is 1.70 V or less for 5 seconds or more (2 trip detection logic).

  • Short in heated oxygen sensor circuit
  • Heated oxygen sensor
  • ECM

Comes on

DTC stored

  • SAE Code: P22B3
  • DTC for Mexico Models: Applies

P22B212

A/F (O2) Sensor Negative Current Control Bank 1 Sensor 2 Circuit Short to Battery

The E2 voltage is higher than 2.30 V for 5 seconds or more (2 trip detection logic).

  • Open or short in heated oxygen sensor circuit
  • Heated oxygen sensor
  • ECM

Comes on

DTC stored

  • SAE Code: P22B4
  • DTC for Mexico Models: Applies

MONITOR DESCRIPTION

These DTCs are stored when there is an open or short in the heated oxygen sensor circuit, or the heated oxygen sensor output value is abnormal. The voltage of the heated oxygen sensor is monitored while the ignition switch is ON, and the impedance (impedance is an electrical term that indicates the difficulty of flow of current) is checked while engine running. If the voltage of the heated oxygen sensor is outside the normal range, or the impedance is outside the normal range, the ECM illuminates the MIL and stores a DTC.

MONITOR STRATEGY

Related DTCs

P22AC: Oxygen sensor (sensor 2) range check (OX1B low voltage)

P22AC: Oxygen sensor (sensor 2) circuit open

P22AD: Oxygen sensor (sensor 2) range check (OX1B high voltage)

P22B3: Oxygen sensor (sensor 2) range check (E2 low voltage)

P22B4: Oxygen sensor (sensor 2) range check (E2 high voltage)

Required Sensors/Components (Main)

Oxygen sensor (sensor 2)

Required Sensors/Components (Related)

-

Frequency of Operation

Continuous

Duration

5 seconds

MIL Operation

2 driving cycles

Sequence of Operation

None

TYPICAL ENABLING CONDITIONS

All

Monitor runs whenever the following DTCs are not stored

None

P22AC: Oxygen Sensor (Sensor 2) Circuit Open

Auxiliary battery voltage

10.5 V or higher

Oxygen sensor (sensor 2) current sweep control

100 seconds or more

Ignition switch

ON

Oxygen sensor (sensor 2) positive current control circuit range check fail (P22AC, P22AD)

Not detected

Oxygen sensor (sensor 2) negative current control circuit range check fail (P22B3, P22B4)

Not detected

P22AC: Oxygen Sensor (Sensor 2) Range Check (OX1B Low Voltage)

All of the following conditions are met

-

Auxiliary battery voltage

10.5 V or higher

Ignition switch to ON

5 seconds or more

oxygen sensor (sensor 2) heater circuit fail (P0037, P0038, P102D)

Not detected

Oxygen sensor (sensor 2) positive current control circuit open fail (P22AC)

Not detected

Oxygen sensor (sensor 2) negative current control circuit range check fail (P22B3, P22B4)

Not detected

Either of the following conditions is met

A or B

A. Time after heater ON

100 seconds or more

B. All of the following conditions are met

-

Time after heater ON

100 seconds or more

Fuel cut

OFF

Time after fuel cut ON to OFF

30 seconds or more

P22AD: Oxygen Sensor(Sensor 2) Range Check Range Check (OX1B High Voltage)

Auxiliary battery voltage

10.5 V or higher

Ignition switch to ON

5 seconds or more

Oxygen sensor (sensor 2) negative current control circuit range check fail (P22B3, P22B4)

Not detected

P22B3 and P22B4: Oxygen Sensor (Sensor 2) Range Check (E2 Low Voltage, E2 High Voltage)

Auxiliary battery voltage

10.5 V or higher

Ignition switch to ON

5 seconds or more

Oxygen sensor (sensor 2) positive current control circuit open fail (P22AC)

Not detected

Oxygen sensor (sensor 2) positive current control circuit range check fail (P22AC, P22AD)

Not detected

TYPICAL MALFUNCTION THRESHOLDS

P22AC: Oxygen Sensor(Sensor 2) Range Check (OX1B Low Voltage)

OX1B terminal voltage

1.70 V or less

P22AC: Oxygen Sensor(Sensor 2) Circuit Open

Oxygen sensor (sensor 2) impedance

Less than 12 Ω

P22AD: Oxygen Sensor (Sensor 2) Range Check Range Check (OX1B High Voltage)

OX1B terminal voltage

Higher than 3.2 V

P22B3: Oxygen Sensor (Sensor 2) Range Check (E2 Low Voltage)

OX1B terminal voltage

Higher than 6.135 V

P22AD: Air Fuel Ratio Sensor (Sensor 2) Sensor Correlation (A1B+ and A1B-)

E2 terminal voltage

Higher than 2.3 V

CONFIRMATION DRIVING PATTERN

  1. Connect the GTS to the DLC3.
  2. Turn the ignition switch to ON.
  3. Turn the GTS on.
  4. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
  5. Turn the ignition switch off and wait for at least 30 seconds.
  6. Turn the ignition switch to ON.
  7. Turn the GTS 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.
  10. Enter the following menus: Powertrain / Engine / Trouble Codes.
  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: P22AB12, P22AB14, P22AB1A, P22B211 or P22B212.
  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

    HINT:

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

WIRING DIAGRAM

Refer to DTC P003612.

Click here 2023 - 2025 MY Corolla Corolla HV [09/2022 -        ]; 2ZR-FXE (ENGINE CONTROL): SFI SYSTEM: P003612,P003613,P014118,P102A9E; HO2S Heater Control Circuit Bank 1 Sensor 2 Circuit Short to Battery+

CAUTION / NOTICE / HINT

NOTICE:

  • Inspect the fuses for circuits related to this system before performing the following procedure.
  • Vehicle Control History may be stored in the hybrid vehicle control ECU if the engine is malfunctioning. Certain vehicle condition information is recorded when Vehicle Control History is stored. Reading the vehicle conditions recorded in both the freeze frame data and Vehicle Control History can be useful for troubleshooting.

    Click here 2023 - 2025 MY Corolla HV [09/2022 -        ]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY with PA10): VEHICLE CONTROL HISTORY (RoB)

    (Select Powertrain in Health Check and then check the time stamp data.)

  • If any "Engine Malfunction" Vehicle Control History item has been stored in the hybrid vehicle control ECU, make sure to clear it. However, as all Vehicle Control History items are cleared simultaneously, if any Vehicle Control History items other than "Engine Malfunction" are stored, make sure to perform any troubleshooting for them before clearing Vehicle Control History.

    Click here 2023 - 2025 MY Corolla HV [09/2022 -        ]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY with PA10): VEHICLE CONTROL HISTORY (RoB)

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 Current B1S2].

    Click here 2023 - 2025 MY Corolla Corolla HV [09/2022 -        ]; 2ZR-FXE (ENGINE CONTROL): SFI SYSTEM: DATA LIST / ACTIVE TEST

  • 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 (HEATED OXYGEN SENSOR VOLTAGE)

HINT:

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

(a) Disconnect the heated oxygen sensor connector.

(b) Turn the ignition switch to ON.

*a

Front view of wire harness connector

(to Heated Oxygen Sensor)

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

C57-3 (OX1B) - Body ground

Ignition switch ON

2.8 to 3.2 V

C57-4 (E2) - Body ground

Ignition switch ON

2.3 to 2.7 V

C57-3 (OX1B) - C57-4 (E2)

Ignition switch ON

0.1 to 0.9 V

HINT:

Perform "Inspection After Repair" after replacing the heated oxygen sensor.

Click here 2023 - 2025 MY Corolla Corolla HV [09/2022 -        ]; 2ZR-FXE (ENGINE CONTROL): SFI SYSTEM: INITIALIZATION

OK

REPLACE HEATED OXYGEN SENSOR

NG

2.

CHECK HARNESS AND CONNECTOR (HEATED OXYGEN SENSOR - ECM)

(a) Disconnect the heated oxygen 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

C57-1 (HT1B) - C147-56 (HT1B)

Always

Below 1 Ω

C57-3 (OX1B) - C147-100 (OX1B)

Always

Below 1 Ω

C57-4 (E2) - C147-99 (O1B-)

Always

Below 1 Ω

C57-1 (HT1B) or C147-56 (HT1B) - Body ground and other terminals

Always

10 kΩ or higher

C57-3 (OX1B) or C147-100 (OX1B) - Body ground and other terminals

Always

10 kΩ or higher

C57-4 (E2) or C147-99 (O1B-) - Body ground and other terminals

Always

10 kΩ or higher

OK

REPLACE ECM 2023 MY Corolla Corolla HV [09/2022 - 11/2022]; 2ZR-FXE (ENGINE CONTROL): ECM: REMOVAL 2023 - 2025 MY Corolla Corolla HV [11/2022 -        ]; 2ZR-FXE (ENGINE CONTROL): ECM: REMOVAL

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR