FixVault

Possible Causes

Possible Causes 
(F343) ASD RELAY OUTPUT CIRCUIT OPEN OR HIGH RESISTANCE
(F856) 5 VOLT SUPPLY CIRCUIT OPEN OR HIGH RESISTANCE
(K235) SRV SIGNAL CIRCUIT OPEN OR HIGH RESISTANCE
(K236) SRV CONTROL CIRCUIT SHORTED TO GROUND
(K236) SRV CONTROL CIRCUIT OPEN OR HIGH RESISTANCE
(K900) SENSOR GROUND CIRCUIT OPEN OR HIGH RESISTANCE
SHORT RUNNER VALVE (SRV) ASSEMBLY
POWERTRAIN CONTROL MODULE (PCM)

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