LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Chrysler >> 2008 >> Pacifica Touring, FWD >> Repair and Diagnosis >> Engine Performance >> System >> DTCS P0643 To P1628 >> P1004-Short Runner Valve Control Performance >> Possible Causes
April 5, 2026: LEMON Manuals is launched! Read the announcement.

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.