P0505 – Idle Control System Malfunction
- System
- Engine
- Dashboard light
- Check engine light (MIL)
- Check-engine blink code
- —
- Applies to
- Generic OBD-II meaning. Not every code is used by this car.
- Description
- Idle Control System Malfunction
- Detection / symptoms
- 1.Check engine light on 2.Engine stalls and may not idle unless throttle is depressed 3.Intermittently stalls when letting off the throttle 4.Engine may idle too high
- Possible causes
- 1.Potential causes of an P0505 code include 2.IAC motor connector is damaged (check connector and pins for damage, and moisture) 3.One or more IAC circuits open or shorted to ground 4.One or more IAC circuits are shorted to voltage 5.IAC has failed 6.PCM has failed
- What to check
- 1.Read the code and freeze-frame data with an OBD-II scanner 2.Check the connector and wiring of the part named in the code 3.Test the part with scanner live data or a multimeter, using the values in the repair manual 4.Fix the cause, clear the code and test-drive
- Confidence
- medium (generic OBD-II definition, not checked against the factory manual for this car)
Generic OBD-II meaning (obd-codes.com), not checked against this car's factory manual. Clear the code and test-drive to confirm it returns. Search all fault codes · Common problems · Warning lights