P0629 Mercury Fuel Pump A Control Circuit High

Possible causes

– Faulty Fuel Pump
– Fuel pump harness is open or shorted
– Fuel pump circuit poor electrical connection
– Faulty Fuel Pump Relay
– Faulty fuel pump control module (if applicable)

Symptoms

– Engine Light ON (or Service Engine Soon Warning Light)

P0629 Mercury Description

When the ignition switch is turned ON the Engine Control Module (ECM) will power the fuel pump relay and run the in-tank fuel pump.