OBD Guide
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P1507

Idle Air Control Under Speed Error

P1507 is an OBD-II diagnostic trouble code meaning: Idle Air Control Under Speed Error. Common causes: idle air valve is dirty or faulty, vacuum leak in intake manifold. Estimated repair cost: $17–89.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–89 (est.)

Symptoms

  • Unstable idle speed
  • Stalls at idle
  • Floating speed
  • Low idle speed
  • Difficulty starting the engine

Causes

  • Idle air valve is dirty or faulty
  • Vacuum leak in intake manifold
  • Throttle valve contamination
  • Problems with the throttle position sensor
  • Faulty wiring or connectors of the idle air system

How to Fix

  1. Check and clean the idle air valve
  2. Inspect the intake tract for vacuum leaks
  3. Clean throttle body
  4. Check throttle position sensor
  5. Check the integrity of electrical wiring and connectors

Related codes

P0505P0506P0507

Error P1507 by Vehicle Brand

BMWFordKiaLincolnMercurySubaruVolkswagen

FAQ

What does the P1507 code mean?

P1507 is an OBD-II diagnostic trouble code that indicates: Idle Air Control Under Speed Error

What causes a P1507 error code?

The most common causes of P1507 include: Idle air valve is dirty or faulty; Vacuum leak in intake manifold; Throttle valve contamination; Problems with the throttle position sensor.

How do I fix a P1507 diagnostic trouble code?

To fix P1507: Check and clean the idle air valve. Inspect the intake tract for vacuum leaks. Clean throttle body. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1507?

Yes, but get it checked soon

How much does it cost to fix P1507?

The estimated repair cost for P1507 is $17–89. Actual cost depends on your vehicle, location, and labor rates.

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