Powertrain
generic / SAE
P0511
Idle Air Control Circuit
A general circuit fault is detected on the idle air control valve - open or short on supply, signal or ground. The ECU loses control of idle bypass airflow.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number5 / 11
Possible causes
- Open in valve or wiring high
Symptoms
- Check engine light on
- Idle speed too high, too low, or unstable
- Possible stalling at idle or after cold start
Inspection / repair
- Difficulty: easy
- DIY: possible
- Estimated cost: 80–320 €
- Estimated time: 0.4–1.5 h
- Component: idle air control valve
- Component: iac wiring
- MIL / check engine light
Sources
References
sae:J2012