P0628high severityPowertrain
Fuel Pump A Control Circuit Low
on 2016 GMC Sierra 1500 5.3L V8 · 4WD
What this code means
Low voltage in fuel pump control circuit.
Symptoms
- No start
- Weak fuel pump
Common causes
- Short to ground
- Corroded wiring
- Bad relay
Diagnostic steps
- Test voltage
- Check for shorts
- Test relay
Repair notes
Repair wiring or replace relay.
Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0011
Intake Camshaft Position Timing Over-Advanced Bank 1
P0012
Intake Camshaft Position Timing Over-Retarded Bank 1
P0013
Exhaust Camshaft Position Actuator Circuit/Open Bank 1
P0014
Exhaust Camshaft Position Timing Over-Advanced Bank 1
P0015
Exhaust Camshaft Position Timing Over-Retarded Bank 1