P0232 Fault Code

P0232 OBD-II Trouble Code Short Description

Fuel Pump Secondary (Feedback) Circuit High Voltage

What does trouble code P0232 mean?

The P0232 code indicates a problem with the fuel pump secondary circuit, specifically a high voltage reading. This can occur due to issues with the fuel pump relay or wiring, or a malfunction in the fuel pump control module.

To diagnose and fix the issue, a mechanic will typically need to perform a thorough inspection of the fuel pump system and electrical circuitry. This may involve checking the wiring and connections, testing the relay, and potentially replacing the fuel pump control module if necessary.

It's important to address this issue promptly, as an improperly functioning fuel pump can cause engine problems and lead to reduced performance and efficiency.


What are the symptoms of the P0232 code?

The symptoms of P0232 fault code on cars may include:

  • Check engine light illuminated
  • Reduced power or lack of engine performance
  • Car may not start at all
  • Fuel pump may be constantly running
  • Fuel gauge may be inaccurate or fluctuating
  • Other engine codes may also be present.


What causes the P0232 code?

The P0232 fault code is triggered when the fuel pump secondary (feedback) circuit detects a high voltage. This indicates a problem with the fuel pump's power supply or circuitry. Possible causes could include a faulty fuel pump relay, damaged wiring or connectors, or a malfunctioning fuel pump control module. In some cases, a faulty fuel pressure sensor or fuel injector circuit can also trigger this fault code. Diagnosing and repairing the underlying issue will require a thorough inspection of the fuel pump system and associated components.

Possible Solutions

How to fix P0232?

To fix the P0232 fault code on cars, you can try the following steps:

  1. Check the fuel pump fuse and relay to ensure they are not faulty.
  2. Inspect the wiring and connections of the fuel pump circuit for any damage or loose connections.
  3. Use a multimeter to test the voltage of the fuel pump circuit.
  4. If the voltage is higher than normal, replace the fuel pump relay or fuel pump control module.

It is recommended to seek the assistance of a professional mechanic if you are not experienced in handling car repairs.