OBD Guide
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P1506

Idle Air Control Overspeed Error

P1506 is an OBD-II diagnostic trouble code meaning: Idle Air Control Overspeed Error. Common causes: idle air valve stuck, idle channel contamination. Estimated repair cost: $17–89.

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

Symptoms

  • Increased idle speed
  • Unstable engine operation at idle
  • Engine stalls when shifting to neutral
  • Increased fuel consumption
  • Check Engine light comes on

Causes

  • Idle air valve stuck
  • Idle channel contamination
  • Throttle Position Sensor Malfunction
  • Air leak in intake manifold
  • Problems with wiring to the idle air valve

How to Fix

  1. Check and clean the idle air valve
  2. Clear the idle air passage
  3. Check the tightness of the intake tract
  4. Check the operation of the throttle position sensor
  5. Check the integrity of the wiring to the idle air valve

Related codes

P0505P0506P0507

Error P1506 by Vehicle Brand

BMWFordKiaLincolnMercuryVolkswagen

FAQ

What does the P1506 code mean?

P1506 is an OBD-II diagnostic trouble code that indicates: Idle Air Control Overspeed Error

What causes a P1506 error code?

The most common causes of P1506 include: Idle air valve stuck; Idle channel contamination; Throttle Position Sensor Malfunction; Air leak in intake manifold.

How do I fix a P1506 diagnostic trouble code?

To fix P1506: Check and clean the idle air valve. Clear the idle air passage. Check the tightness of the intake tract. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1506?

Yes, but get it checked soon

How much does it cost to fix P1506?

The estimated repair cost for P1506 is $17–89. Actual cost depends on your vehicle, location, and labor rates.

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