P0628

Test 1 - 3:

Test 4 - 6:

SYMPTOM
P0628-LOW VOLTAGE DETECTED AT THE FUEL LIFT PUMP

WHEN MONITORED
While the key is on.

SET CONDITION
The voltage detected on the Fuel Lift Pump is above a calibrated value for a calibrated amount on time.

POSSIBLE CAUSES
- Loose connection
- Ground circuit open
- Lift pump shorted to voltage
- Lift pump
- ECM