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 DTC P2245 [L3 Turbo]

DTC P2245 [L3 Turbo]

id0102b7813200

DTC P2245

A/F sensor reference voltage circuit low input

DETECTION CONDITION

• The PCM monitors is A/F sensor reference voltage circuit voltage. If the voltage below the threshold value while the engine is running, the PCM determines that the A/F sensor reference voltage circuit is low.
Diagnostic support note
• This is a continuous monitor. (A/F sensor , HO2S)
• MIL illuminates if the PCM detects the above malfunctioning condition in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the PCM.
• PENDING CODE is available if the PCM detects the above malfunction conditions during the first drive cycle.
• FREEZE FRAME DATA is available.
• DTCs are stored in the PCM memory.

POSSIBLE CAUSE

• A/F sensor malfunction
• Connector or terminal malfunction
• Short to ground circuit between PCM terminal 2M and A/F sensor terminal 2C
• PCM malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION

1
VERIFY FREEZE FRAME DATA AND DIAGNOSTIC MONITORING TEST RESULTS HAS BEEN RECORDED
• Has FREEZE FRAME DATA been recorded?
Yes
Go to the next step.
No
Record the FREEZE FRAME DATA on the repair order, then go to the next step.
2
VERIFY RELATED REPAIR INFORMATION AVAILABILITY
• Verify related Service Information availability.
• Is any related Service Information available?
Yes
Perform repair or diagnosis according to the available Service information.
If the vehicle is not repaired, go to the next step.
No
Go to the next step.
3
IDENTIFY TRIGGER DTC FOR FREEZE FRAME DATA
• Is DTC P2245 on FREEZE FRAME DATA?
Yes
Go to the next step.
No
Go to troubleshooting for DTC on FREEZE FRAME DATA.
4
INSPECT A/F SENSOR CONNECTOR FOR POOR CONNECTION
• Turn the ignition switch to off.
• Disconnect the A/F sensor connector.
• Inspect for poor connection (such as damaged/ pulled-out pins, and corrosion).
• Is there any malfunction?
Yes
Repair or replace the terminal, then go to Step 8.
No
Go to the next step.
5
INSPECT A/F SENSOR REFERENCE VOLTAGE CIRCUIT FOR SHORT TO GROUND AT A/F SENSOR
• Turn the ignition switch to the off.
• A/F sensor connector disconnected.
• Inspect the continuity between A/F sensor terminal 2C (part-side) and ground.
• Is there continuity?
Yes
Replace the A/F sensor, then go to Step 8.
No
Go to the next step.
6
INSPECT PCM CONNECTOR FOR POOR CONNECTION
• Turn the ignition switch to off.
• Disconnect the PCM connector.
• Inspect for poor connection (such as damaged/ pulled-out pins, and corrosion).
• Is there any malfunction?
Yes
Repair or replace the terminal, then go to Step 8.
No
Go to the next step.
7
INSPECT A/F SENSOR REFERENCE VOLTAGE CIRCUIT FOR SHORT TO GROUND AT PCM - A/F SENSOR
• Turn the ignition switch to the off.
• A/F sensor and PCM connectors disconnected.
• Inspect the continuity between A/F sensor terminal 2C (harness-side) and ground.
• Is there continuity?
Yes
Repair or replace the wiring harness for a possible short to ground between PCM terminal 2M and A/F sensor terminal 2C, then go to the next step.
No
Go to the next step.
8
VERIFY TROUBLESHOOTING OF DTC P2245 COMPLETED
• Make sure to reconnect all disconnected connectors.
• Clear the DTC from the PCM memory using the WDS or equivalent.
• Perform the A/F sensor heater, HO2S heater, A/F sensor, HO2S and TWC Repair Verification Drive Mode.
• Is the PENDING CODE same DTC present?
Yes
Replace the PCM, then go to the next step.
No
Go to the next step.
9
VERIFY AFTER REPAIR PROCEDURE
• Perform the "After Repair Procedure".
• Are any DTCs present?
Yes
Go to the applicable DTC inspection.
No
Troubleshooting completed.