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Home >> Chrysler >> 2006 >> PT Cruiser Base, 2D Convertible, Standard >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> 2.4L Engine - DTCS PO509 To P0850 >> Diagnosis And Testing >> P0509-Idle Air Control Valve Sense Circuit High >> Possible Causes

Possible Causes

Possible Causes 
(K961) IAC RETURN CIRCUIT SHORTED TO BATTERY VOLTAGE
(K61) IAC MOTOR CONTROL CIRCUIT SHORTED TO BATTERY VOLTAGE
(K61) IAC MOTOR CONTROL CIRCUIT SHORTED TO THE (K961) IAC RETURN CIRCUIT
IAC MOTOR
PCM

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding.  (Refer to PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE)  .  

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