P0629

2017-10-10

Description:

  • The fault code P0629 indicates a high voltage condition in the control circuit of fuel pump 'A'. This fault code typically points to a problem with the control module or wiring associated with the fuel pump.

Possible Symptoms:

  • Malfunction Indicator Lamp (MIL) or Check Engine Light illuminated

  • Engine may not start or have difficulty starting

  • Loss of engine power

  • Fuel pump may run continuously or at a higher speed than normal

  • Fuel pump may not deliver adequate fuel pressure to the engine

  • Fuel economy may be affected

Possible Causes:

  • Faulty fuel pump relay

  • Malfunctioning fuel pump control module

  • Wiring or connection issues in the fuel pump circuit

  • High resistance or short circuit in the fuel pump circuit

  • Faulty fuel pump

Related Parts:

  • Fuel Pump: The fuel pump takes fuel from the fuel tank and delivers it to the engine. Problems in this car's fuel pump may lead to engine misfire, poor fuel economy & poor acceleration

Possible Solutions:

  • Check and replace the fuel pump relay if it is determined to be faulty

  • Inspect the wiring and connections in the fuel pump circuit for any damage or loose connections, and repair as needed

  • Test and replace the fuel pump control module if it is found to be malfunctioning

  • Inspect for high resistance or short circuits in the fuel pump circuit and address any issues

  • Test the fuel pump functionality and replace it if necessary

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