Refer to DTC P003012.
Although the DTC titles say oxygen sensor, these DTCs relate to the air fuel ratio sensor (sensor 1).
| 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 | The A1A+ voltage 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 |
| P223712 | A/F (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). | ·
Short in air fuel ratio sensor (sensor 1) circuit ·
Air fuel ratio sensor (sensor 1) ·
ECM |
Comes on | DTC stored | SAE Code:
P2239 |
| P223713 | A/F (O2) Sensor Positive Current Control Bank 1 Sensor 1 Circuit Open | An open or short to ground in the circuit between terminals A1A+ and A1A- of the air fuel ratio sensor (sensor 1) 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 | A/F (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 (sensor 1) circuit ·
Air fuel ratio sensor (sensor 1) ·
ECM |
Comes on | DTC stored | SAE Code:
P2238 |
| P223717 | A/F (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 (sensor 1) circuit ·
Air fuel ratio sensor (sensor 1) ·
ECM |
Comes on | DTC stored | SAE Code:
P2239 |
| P22371B | A/F (O2) Sensor Positive Current Control Bank 1 Sensor 1 Circuit Resistance Above Threshold | The air fuel ratio sensor (sensor 1) 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 | The A1A- voltage 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 |
| 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). | ·
Short in air fuel ratio sensor (sensor 1) circuit ·
Air fuel ratio sensor (sensor 1) ·
ECM |
Comes on | DTC stored | SAE Code:
P2253 |
These DTCs are output when there is an open or short in the air fuel ratio sensor (sensor 1) circuit, or if the air fuel ratio sensor (sensor 1) output drops. To detect these problems, the voltage of the air fuel ratio sensor (sensor 1) is monitored when turning the ignition switch to ON, 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 (sensor 1) 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 (sensor 1). If the same malfunction is detected in the next driving cycle, the ECM will illuminate the MIL and store a DTC.
| Required Sensors/Components | Air fuel ratio sensor (sensor 1) |
| Frequency of Operation | Continuous |
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.
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for at least 30 seconds.
Start the engine and wait 5 minutes [A].
Turn the GTS on.
Enter the following menus: Powertrain / Engine / Trouble Codes [B].
Read the pending DTCs.
If a pending DTC is output, the system is malfunctioning.
If a pending DTC is not output, perform the following procedure.
Enter the following menus: Powertrain / Engine / Utility / All Readiness.
Input the DTC: P223711, P223712, P223713, P223716, P223717, P22371B, P225111 or P225112.
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 |
If the judgment result is NORMAL, the system is normal.
If the judgment result is ABNORMAL, the system has a malfunction.
[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 battery terminal or attempt to clear the DTCs during this procedure, as doing so will clear the universal trip and normal judgment histories.
Inspect the fuses for circuits related to this system before performing the following procedure.
Refer to "Data List / Active Test" [A/F (O2) Sensor Voltage B1S1].
Sensor 1 refers to the sensor closest to the engine assembly.
Sensor 2 refers to the sensor farthest away from the engine assembly.
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.
Disconnect the air fuel ratio sensor (sensor 1) connector.
Disconnect the ECM connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| C55-1 (HA1A) - C78-19 (HA1A) | Always | Below 1 Ω |
| C55-3 (A1A+) - C78-131 (A1A+) | Always | Below 1 Ω |
| C55-4 (A1A-) - C78-132 (A1A-) | Always | Below 1 Ω |
| C55-1 (HA1A) or C78-19 (HA1A) - Body ground and other terminals | Always | 10 kΩ or higher |
| C55-3 (A1A+) or C78-131 (A1A+) - Body ground and other terminals | Always | 10 kΩ or higher |
| C55-4 (A1A-) or C78-132 (A1A-) - Body ground and other terminals | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Replace the air fuel ratio sensor (sensor 1).
Perform "Inspection After Repair" after replacing the air fuel ratio sensor (sensor 1).
| Proceed to |
|---|
| NEXT |
NEXT
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Clear the DTCs.
Turn the ignition switch off and wait for at least 30 seconds.
| Proceed to |
|---|
| NEXT |
NEXT
Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern.
Enter the following menus: Powertrain / Engine / Utility / All Readiness.
| Tester Display |
|---|
| All Readiness |
Input the DTC: P223711, P223712, P223713, P223716, P223717, P22371B, P225111 or P225112.
Check the DTC judgment result.
| Result | Proceed to |
|---|---|
| NORMAL
(DTCs are not output) |
A |
| ABNORMAL
(DTC P223711, P223712, P223713, P223716, P223717, P22371B, P225111 or P225112 is output) |
B |
A
B