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Air intakeSeverity Medium: diagnose soon

P0507Idle Air Control System RPM Higher Than Expected

What it means

The idle speed stays above the target even though the ECU closed the idle control as far as it can. Extra air is getting in.

Symptoms

  • High idle
  • Idle hunting or a whistling noise

Common causes

  • Vacuum leak
  • Dirty or faulty throttle body
  • Coolant temperature sensor reading cold
  • Sticking throttle cable or pedal

What to check first

  1. Smoke-test the intake
  2. Clean and relearn the throttle body
  3. Check the coolant temperature reading
Can I drive with P0507? Usually yes for a short distance, but performance or economy may suffer and the fault can get worse. Diagnose it soon.
Practise it: Vacuum leak in the engine simulator shows this fault in live data, tests and on the scope.Open in the simulator

Generic OBD-II meaning. Manufacturer-specific meanings and checks can differ; always check the service information for the car.

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P0507: questions and answers

What does P0507 mean?

P0507: Idle Air Control System RPM Higher Than Expected. The idle speed stays above the target even though the ECU closed the idle control as far as it can. Extra air is getting in.

What are the symptoms of P0507?

High idle. Idle hunting or a whistling noise.

What causes P0507?

Vacuum leak. Dirty or faulty throttle body. Coolant temperature sensor reading cold. Sticking throttle cable or pedal.

How do you diagnose P0507?

1. Smoke-test the intake 2. Clean and relearn the throttle body 3. Check the coolant temperature reading

Can I drive with P0507?

Usually yes for a short distance, but performance or economy may suffer and the fault can get worse. Diagnose it soon.