P0518
Idle Air Control Circuit Intermittent
Generic code
Vehicle Speed and Idle Control System
High severity
Moderate repair
Free on OBD DashX
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What P0518 means
- The fault code P0518 indicates that there is a low voltage problem in the idle air control (IAC) system circuit. This may cause the engine to stall or have a rough idle.
Possible symptoms
- Engine stalls or has a rough idle
- Illuminated check engine light
- Unstable idle speed
- Reduced engine power or acceleration
Possible causes
- Faulty idle air control valve
- Damaged or corroded wiring in the IAC circuit
- Loose or corroded electrical connections in the IAC circuit
- Failed engine control module (ECM)
Related parts
- Idle Air Control System: IAC (Idle Air Control) System controls the speed of the engine when it is idling. This car's engine may keep stalling due to problems with the IAC
Possible solutions
- Replace the idle air control valve
- Check and repair any damaged or corroded wiring in the IAC circuit
- Tighten or clean any loose or corroded electrical connections in the IAC circuit
- Replace the engine control module (ECM) if necessary
Free on OBD DashX
P0518 on OBD DashX
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