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Diagnostic aid: P0230 - No control of fuel pump relay

Delphi Delco Multec HSFI-2.x / HDRC - ECUs
Delphi Delco Multec HSFI-2.x / HDRC

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A common error code for various Vauxhall models is P0230. This code indicates a problem with the fuel pump relay control. This relay is responsible for turning on the fuel pump when the ignition is turned on. If the relay malfunctions, the fuel pump will not receive power, which can lead to starting problems or complete engine failure while driving. This fault occurs most often in the Delphi Delco Multec HSFI-2.x / HDRC ECU in the following Vauxhall models: :

Possible causes of the P0230 error code

There are several reasons why the fuel pump relay is not activated. Some possible causes are:

  • Defective fuel pump relay: The relay itself may be defective, preventing it from passing current to the fuel pump
  • Wiring problems: An interrupted, melted or poor contact in the wiring can disrupt the power supply to the relay
  • Defective fuses: A blown fuse can prevent the relay from receiving power
  • Problems with the ECU: The Delphi Delco Multec HSFI-2.x / HDRC ECU (Electronic Control Unit) may have a malfunction, preventing it from sending a signal to the relay to control the fuel pump
  • Poor ground connection: A poor ground connection can affect the operation of the relay

Tip: for the MT35E with this error code: the battery and/or starter motor can cause these problems due to "voltage peaks" during starting. One cause may be that the carbon brushes are worn. This causes voltage peaks in the system and the starter motor can draw too much current.

Advice for solving this Vauxhall error code

To resolve the P0230 error code, the Delphi Delco Multec HSFI-2.x / HDRC can be overhauled. ACTRONICS offers a solution for this. This P0230 error code is a known problem for which ACTRONICS has developed a revision solution You can place an order via our website, send the part, and we will take care of the rest. We guarantee that the part will be returned in top condition. Do you have any questions about this problem or other Opel related issues? Please feel free to contact us!