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Possible Causes

Possible Causes
EGR VALVE MOTOR (+) (CONTROL 1) CIRCUIT OPEN/HIGH RESISTANCE
EGR VALVE MOTOR (-) (CONTROL 2) CIRCUIT OPEN/HIGH RESISTANCE
EGR VALVE CONTROL 1 CIRCUIT SHORTED TO VOLTAGE
EGR VALVE CONTROL 2 CIRCUIT SHORTED TO VOLTAGE
EGR VALVE CONTROL 1 CIRCUIT SHORTED TO THE EGR VALVE CONTROL 2 CIRCUIT
EGR VALVE ASSEMBLY
POWERTRAIN CONTROL MODULE

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  . 

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