Engine-Codes - Mazda - P1506 MAZDA

P1506 MAZDA - Idle Air Control Overspeed Error

Repair Importance Level: 3/3
Repair Difficulty Level: 2/3  What is this?
Table of contents

P1506 MAZDA Possible Causes

  • Faulty Idle Air Control (IAC) valve
  • Idle Air Control (IAC) valve harness is open or shorted
  • Idle Air Control (IAC) valve circuit poor electrical connection

How is the P1506 MAZDA code repair?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

Tech Notes

The P1506 code means that the engine idle is out of factory specification. Sometimes the Idle Air Control (IAC) may have carbon built up. Disconnect the car battery, remove the valve, clean, re-install valve, and drive the vehicle for about 5 minutes with the headlights and A/C ON to get the idle relearned.
Also, check for intake leaks or stuck PCV Valve.
If the problem persistss, the IAC valve may need to be replaced.

What is the cost to diagnose the P1506 MAZDA code

Labor: 1.0

The cost to diagnose the P1506 MAZDA code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.

Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P1506 MAZDA Meaning

The P1506 code is set when the Engine Control Module (ECM) detects engine idle speed that is greater than the desired rpm.

More Information

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