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Possible Causes

Possible Causes 
INTERMITTENT DTC
(F856) 5 VOLT SUPPLY CIRCUIT HIGH RESISTANCE
(K34) EGR SIGNAL CIRCUIT HIGH RESISTANCE
(K900) SENSOR GROUND CIRCUIT HIGH RESISTANCE
(Z904) GROUND CIRCUIT HIGH RESISTANCE
(K35) EGR CONTROL CIRCUIT HIGH RESISTANCE
EXHAUST GAS RECIRCULATION VALVE

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to *PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

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