Diagnostic Aids
WARNING: This page is about a different variant/trim than selected.
- The scan tool can be used to isolate the cause of an intermittent DTC P0511. Engine idle speed can be controlled with the scan tool. Operate the IAC valve with the scan tool while checking for a smooth increase and decrease in engine speed. If engine speed can be controlled, the IAC system is functioning normally.
- An intermittent malfunction may be caused by a fault in the IAC sensor electrical circuit. Inspect the wiring harness and the components for an intermittent condition. Refer to Intermittent Conditions .
- Repair any electrical circuit faults that were found. Refer to Wiring Repairs in Wiring Systems.
- The information included in the Freeze Frame data can be useful in determining the vehicle operating conditions when the DTC first set.
- If the DTC P0511 does not reset, but a driveability symptom still exists, refer to Symptoms - Engine Controls .