P0507: Idle Air Control System RPM Higher Than Expected
Severity: low
What it means: The engine is idling faster than the computer is targeting.
Safe to drive? Generally safe to drive, but a high idle can make the car creep in gear.
Common symptoms
- High or surging idle
- Car creeps forward at stops
Likely causes, ranked
- Vacuum leakDIY
- Dirty throttle body or idle air control valveDIY
- Throttle body needing an idle relearnShop
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What it means: The engine is idling faster than the computer is targeting.
Severity: Low. Safe to drive? Generally safe to drive, but a high idle can make the car creep in gear.
DIY or shop?
Cleaning the throttle body and checking for vacuum leaks are common DIY fixes.
Before you replace parts
- Read all stored codes and freeze-frame data. Fix misfire, fuel or sensor codes before chasing emissions codes.
- Check the simple things first: connectors, vacuum hoses, fluid levels and the gas cap.
- Clear the code only after a repair, then confirm it stays off after a few drives.
- Check your VIN for recalls and service bulletins.
Safety / mechanic note
Generally not urgent, but a code only points to a system, not always a specific part. Verify with a mechanic before buying expensive parts.
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