P1506 JEEP Idle Air Control Overspeed Error

P1506 JEEP Idle Air Control Overspeed Error

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
Tech description
The P1506 JEEP 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.
If the problem persist, the IAC valve may need to be replaced.
Symptoms
Engine Light ON (or Service Engine Soon Warning Light)
P1506 JEEP Description

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

JEEP Vehicle:JEEP Commander,JEEP Compass,JEEP Grand Cherokee,JEEP Liberty,JEEP Patriot,JEEP Wrangler,JEEP Wrangler Unlimited,

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