Automotive Engine ManagementMedium Severity
Idle Control System RPM Higher Than Expected - Diagnosis
Applies to: OBD-II Universal (Nissan, Infiniti, GM, Honda)
Safety & Usage Advisory
Can you still drive / use device? Driveable, but braking distance may increase slightly due to high engine idle.
Estimated Repair Cost
$40
$40 - $250 (DIY Throttle Relearn: $0)
Diagnostic Category
Automotive Engine Management
OBD-II Universal (Nissan, Infiniti, GM, Honda)
Fix Difficulty
Beginner
~30-60 Mins Required
Common Symptoms
- Engine idles at 1,000+ RPM in park/neutral
- RPM surges or hunts at red lights
- Check Engine Light illuminated
Root Causes
- Intake manifold vacuum leak
- Carbon buildup causing sticky electronic throttle body
- Uncalibrated idle air volume after battery disconnect
- Faulty PCV valve stuck open
Step-by-Step Instructions to Fix P0507
1
Check for Unmetered Vacuum Leaks
Spray brake cleaner around intake manifold gaskets; an RPM change reveals the leak location.
2
Clean Throttle Body & Carbon Deposits
Gently clean carbon soot around throttle blade using throttle cleaner and microfiber towel.
3
Perform Idle Air Volume Relearn Procedure
Follow vehicle-specific ignition key on/off timing sequence or use OBD scanner to reset baseline idle.
How to Prevent P0507 in the Future
- Perform electronic throttle relearns whenever the battery or intake components are replaced
P0507 Troubleshooting FAQs
The ECU was used to compensating for thick carbon. You must perform an Idle Air Relearn procedure to reset the throttle position.