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Home >> Chrysler >> 2007 >> PT Cruiser Base, 2D Convertible, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> DTCS P0340 To P050B >> P050B-Cold Start Ignition Timing Performance >> Possible Causes

Possible Causes

Possible Causes 
RESTRICTED INTAKE AIR SYSTEM
LOW BATTERY VOLTAGE
FUEL CONTAMINATION
EXCESSIVE RESISTANCE IN THE (K61) IAC CONTROL CIRCUIT
EXCESSIVE RESISTANCE IN THE (K961) IAC SIGNAL CIRCUIT
IAC/THROTTLE BODY
PCM

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