P1507
Idle Air Control Under Speed Error
Severity
⚠️ MediumCan you drive?
Yes, but get it checked soon
Approx. repair cost
$17–89 (est.)
Symptoms
- Unstable idle speed
- Stalls at idle
- Floating speed
- Low idle speed
- Difficulty starting the engine
Causes
- Idle air valve is dirty or faulty
- Vacuum leak in intake manifold
- Throttle valve contamination
- Problems with the throttle position sensor
- Faulty wiring or connectors of the idle air system
How to Fix
- Check and clean the idle air valve
- Inspect the intake tract for vacuum leaks
- Clean throttle body
- Check throttle position sensor
- Check the integrity of electrical wiring and connectors