P0629 Fault Code

Fuel Pump A Control Circuit High

• What does that mean?
• Symptoms
• Causes
• Solutions

The P0629 fault code indicates that there is a problem with the Fuel Pump A Control Circuit, specifically that the control signal is too high. This can result in the fuel pump not functioning correctly, leading to fuel system issues.

What are the symptoms of the P0629 code?

Symptoms associated with the P0629 code may include:

• Difficulty starting the engine
• Engine stalling or poor performance
• Inconsistent fuel delivery
• Possible loss of power while driving
• Check Engine light illuminated on the dashboard.

What causes the P0629 code?

Common causes of the P0629 code include:

• Faulty fuel pump relay
• Damaged wiring or connectors in the fuel pump circuit
• Defective fuel pump control module
• Short circuits in the fuel pump circuit
• Issues with the engine control unit (ECU) related to fuel management.

How to fix P0629?

To resolve the P0629 code, consider the following steps:

• Inspect the fuel pump relay and replace it if necessary.
• Check the wiring and connectors for signs of damage or corrosion, repairing or replacing as needed.
• Test the fuel pump control module for functionality and replace it if faulty.
• Verify that there are no short circuits in the circuit.
• Clear the fault codes and perform a road test to ensure the issue is resolved.