FixVault

Possible Causes

Possible Causes 
(K34) EGR POSITION SENSOR SIGNAL CIRCUIT SHORTED TO (F856) 5-VOLT SUPPLY CIRCUIT
(K34) EGR POSITION SENSOR SIGNAL CIRCUIT SHORTED TO BATTERY VOLTAGE
(K34) EGR POSITION SENSOR SIGNAL CIRCUIT OPEN
(K900) SENSOR GROUND CIRCUIT OPEN
EGR SOLENOID ASSEMBLY
PCM

Always perform the  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  before proceeding.