P0507: Idle Control System RPM Higher Than Expected
Idle speed is higher than commanded, often from a vacuum leak.
Green, yellow, red: three ways P0507 can look
The same code can be a quick fix or a reason to pull over. Match your situation to the closest example.
Keep an eye on it
Idle slightly high.
Schedule a repair
High idle or harder braking at stops. Repair soon.
Stop and get help
Idle racing very high. Don't drive until fixed.
Symptoms you might notice
- High idle
- Car creeps forward at stops
Common causes, cheapest first
- Vacuum leak
- Dirty throttle body
- Failing idle control
What you can check before calling
- Listen for hissing at idle
A code points to a system, not a part. Replacing parts based on the code alone is how people spend money without fixing the problem. Testing confirms the cause first.
Generic codes (second character 0) mean the same thing on every vehicle. Some manufacturers add their own details, so check service information for your exact vehicle.
More idle, speed & electrical codes
Look up another code
Cummins fault code (like 1922), J1939 SPN and FMI (like SPN 3251 FMI 0), or an OBD-II code (like P0420).
Questions
What does P0507 mean?
P0507 means "Idle Control System RPM Higher Than Expected". Idle speed is higher than commanded, often from a vacuum leak.
Can I drive with code P0507?
It depends on what the vehicle is doing. Green: Idle slightly high. Yellow: High idle or harder braking at stops. Repair soon. Red: Idle racing very high. Don't drive until fixed.
What causes P0507?
The most common causes are: vacuum leak; dirty throttle body; failing idle control.
Is P0507 a serious code?
It can be. Idle racing very high. Don't drive until fixed.
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