Idle Control System RPM Higher Than Expected
Fix P0507 high idle code. Learn why your engine idle speed is too high and how to correct it.
Engine Problems
Symptoms
- 1High idle speed (over normal)
- 2Vehicle creeps forward in gear
- 3Check engine light on
- 4Idle doesn't drop after warm-up
- 5RPM hangs high after acceleration
Common Causes
- 1Vacuum leak
- 2IAC valve stuck open
- 3Dirty throttle body
- 4Air intake leak after MAF
- 5Throttle position sensor issues
How to Fix
- 1Check for vacuum leaks thoroughly
- 2Clean throttle body and IAC
- 3Inspect intake system for leaks
- 4Test IAC valve operation
- 5Check TPS readings
What Does P0507 Mean?
P0507 indicates that the engine idle speed is higher than the ECM's target range, typically more than 200 RPM above the desired idle.Why Idle Runs High
High idle is often caused by extra air entering the engine through vacuum leaks, or a stuck IAC valve allowing too much airflow.Safety Note
High idle can cause the vehicle to creep forward unexpectedly when in gear. Address this code promptly.Related Codes
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