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Possible Causes

Possible Causes
EGR VALVE POSITION SENSOR SIGNAL CIRCUIT SHORTED TO GROUND
EGR VALVE POSITION SENSOR SIGNAL CIRCUIT SHORTED TO THE SENSOR GROUND 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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