P0629
Fuel Pump A Control Circuit High
2015-2015 Cadillac ATS 2.5L I4
Moderate SeverityPowertrainGeneric (SAE)
The 2015 Cadillac ATS is equipped with a 2.5L inline-4 engine. Below you'll find detailed p0629 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
High voltage in fuel pump control circuit.
Symptoms
- Fuel pump always running
Common Causes
- Short to power
- Relay stuck closed
Diagnostic Steps
- Test voltage
- Check relay
- Look for shorts to power
Repair Notes
Replace relay. Repair wiring.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P0629 on Other Vehicles
Common Questions
What does code P0629 mean on a 2015-2015 Cadillac ATS?
P0629 stands for "Fuel Pump A Control Circuit High". High voltage in fuel pump control circuit.
What are the symptoms of P0629 on a Cadillac ATS?
Common symptoms of P0629 include: Fuel pump always running.
What causes P0629 on a 2015-2015 Cadillac ATS?
Common causes of P0629 include: Short to power, Relay stuck closed.
Last updated: March 2026