P0518
Idle Air Control Circuit Intermittent
P0518 is an OBD-II diagnostic trouble code meaning: Idle Air Control Circuit Intermittent. Common causes: open or poor contact in the iac wiring harness, idle air control malfunction. Estimated repair cost: $33–89.
Symptoms
- Unstable idle
- Engine stalls at idle
- Floating speed
- Difficulty starting the engine
Causes
- Open or poor contact in the IAC wiring harness
- Idle air control malfunction
- Throttle valve contamination
- Problems with power or grounding of the IAC circuit
How to Fix
- Check the wiring harness and IAC connectors for damage.
- Clean the throttle valve and IAC channel
- Check the performance of the IAC
- Replace idle air control if necessary
Related codes
Error P0518 by Vehicle Brand
FAQ
What does the P0518 code mean?
P0518 is an OBD-II diagnostic trouble code that indicates: Idle Air Control Circuit Intermittent
What causes a P0518 error code?
The most common causes of P0518 include: Open or poor contact in the IAC wiring harness; Idle air control malfunction; Throttle valve contamination; Problems with power or grounding of the IAC circuit.
How do I fix a P0518 diagnostic trouble code?
To fix P0518: Check the wiring harness and IAC connectors for damage.. Clean the throttle valve and IAC channel. Check the performance of the IAC. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0518?
Limited driving only, diagnose soon
How much does it cost to fix P0518?
The estimated repair cost for P0518 is $33–89. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat