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Home >> Chrysler >> 2007 >> Pacifica Base, 3.8 L >> Repair and Diagnosis >> Engine Performance >> System >> DTCS P0430 To P0572 >> P0503-Vehicle Speed Sensor 1 Erratic >> Possible Causes

Possible Causes

Possible Causes 
ACTIVE BUS OR COMMUNICATION DTCS
EXCESSIVE WHEEL SPEED VARIATION
POWERTRAIN CONTROL MODULE (PCM)

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE