DTC P0505 [AJ (3.0L Duratec)]


id0102a4808500

DTC P0505

IAC system malfunction

DETECTION CONDITION

• The test fails when the desired rpm could not be reached or controlled during the self-test.

POSSIBLE CAUSE

• IAC valve circuit malfunction
• PCM malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION

1
VERIFY FREEZE FRAME DATA 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 repair information availability.
• Is any related repair information available?
Yes
Perform repair or diagnosis according to the available repair information.
• If the vehicle is not repaired, go to the next step.
No
Go to the next step.
3
VERIFY RELATED PENDING CODE OR STORED DTC
• Verify the related PENDING CODE or stored DTCs.
• Are other DTCs present?
Yes
Go to appropriate DTC inspection.
No
Go to next step.
4
INSPECT IAC VALVE MALFUNCTION
• Inspect the IAC valve.
• Is IAC valve normal?
Yes
Go to the next step.
No
Replace IAC valve, then go to Step 5.
5
VERIFY TROUBLESHOOTING OF DTC P0505 COMPLETED
• Make sure to reconnect all disconnected connectors.
• Clear the DTC using the WDS or equivalent.
• Start the engine.
• Is the same DTC present?
Yes
Replace the PCM, then go to the next step.
No
Go to the next step.
6
VERIFY AFTER SERVICE PROCEDURE
• Perform the "AFTER SERVICE PROCEDURE".
• Are any DTC present?
Yes
Go to the applicable DTC troubleshooting.
No
Troubleshooting completed.