P1506
Idle Air Control Overspeed Error
Severity
⚠️ MediumCan you drive?
Yes, but get it checked soon
Approx. repair cost
$17–89 (est.)
Symptoms
- Increased idle speed
- Unstable engine operation at idle
- Engine stalls when shifting to neutral
- Increased fuel consumption
- Check Engine light comes on
Causes
- Idle air valve stuck
- Idle channel contamination
- Throttle Position Sensor Malfunction
- Air leak in intake manifold
- Problems with wiring to the idle air valve
How to Fix
- Check and clean the idle air valve
- Clear the idle air passage
- Check the tightness of the intake tract
- Check the operation of the throttle position sensor
- Check the integrity of the wiring to the idle air valve