P0507: Idle Control System RPM Higher Than Expected
Can you still drive? Yes, a high idle is not dangerous but wastes fuel. The vehicle may creep forward more aggressively when in gear at stops.
What Does P0507 Mean?
Code P0507 indicates that the engine idle speed is higher than the ECM's target idle speed by a calibrated amount. The ECM continuously monitors idle RPM and attempts to bring it within the target range. When the idle speed consistently exceeds the expected RPM, this code is set. Common target idle is 600-800 RPM depending on the vehicle.
Need to read your codes?
An OBD-II scanner lets you read and clear diagnostic trouble codes from your vehicle's computer. Most scanners work with any car made after 1996.
Browse OBD-II Scanners on AmazonCommon Causes
- Vacuum leak at intake manifold or hose
- Dirty throttle body holding plate slightly open
- Faulty IAC valve stuck open
- Intake manifold gasket leak
- Improperly adjusted throttle cable
Symptoms
- Check engine light on
- High idle speed (above normal RPM)
- Engine races at stops
- Increased fuel consumption at idle
Diagnostic Steps
- 1Check current idle RPM with scan tool and compare to target
- 2Perform smoke test for vacuum leaks
- 3Clean throttle body and ensure plate closes fully
- 4Check IAC valve operation
- 5Inspect intake manifold gaskets
- 6Check throttle cable adjustment
- 7Look for unplugged vacuum lines
Recommended Parts & Tools
throttle body cleaner
idle air control valve
vacuum hose kit
intake manifold gasket
Estimated Repair Cost
| Type | Estimated Cost |
|---|---|
| Total Repair Cost Range | $30 - $400 |
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Chat with AI About P0507Commonly Affected Vehicles
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Frequently Asked Questions
Why is my engine idling high?
High idle is usually caused by a vacuum leak or dirty throttle body. Extra unmetered air enters the engine, raising the idle speed above the ECM's target.
What is normal idle speed?
Normal idle speed for most vehicles is between 600 and 800 RPM when warm. Cold idle may be higher, around 1000-1200 RPM, and this is normal.
Community Fix Reports
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