Possible causes
– Faulty fuel pump relay
– Fuel pump harness is open or shorted
– Fuel pump circuit poor electrical connection
– Faulty fuel pump control module (if applicable)
– Fuel pump harness is open or shorted
– Fuel pump circuit poor electrical connection
– Faulty fuel pump control module (if applicable)
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
P0627 JEEP OBD Code Description
The Engine Control Module (ECM) has detected an open or short in the fuel pump relay circuit.