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Home >> Jeep >> 2009 >> Commander Overland, 4WD >> Repair and Diagnosis >> Engine Performance >> System >> DTCS P0507 To P0600 - NGC >> P050B-Cold Start Ignition Timing Performance >> Possible Causes
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Possible Causes

Possible Causes 
RESTRICTED INTAKE AIR SYSTEM
LOW BATTERY VOLTAGE
FUEL CONTAMINATION
EXCESSIVE RESISTANCE IN THE (K124) ETC POSITIVE CIRCUIT
EXCESSIVE RESISTANCE IN THE (K126) ETC NEGATIVE CIRCUIT
ETC MOTOR/THROTTLE BODY
POWERTRAIN CONTROL MODULE (PCM)

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See  DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure  .