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Home >> Chrysler >> 2008 >> Pacifica LX, 3.8 L >> Repair and Diagnosis >> Engine Performance >> System >> DTCS P0643 To P1628 >> P1004-Short Runner Valve Control Performance >> Possible Causes

Possible Causes

Possible Causes 
INTERMITTENT DTC
(F343) ASD RELAY OUTPUT CIRCUIT OPEN OR HIGH RESISTANCE
(K236) SRV CONTROL CIRCUIT SHORTED TO GROUND
(K236) SRV CONTROL CIRCUIT OPEN OR HIGH RESISTANCE
SHORT RUNNER VALVE ASSEMBLY
POWERTRAIN CONTROL MODULE (PCM)

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.