P023F Fault Code

P023F OBD-II Trouble Code Short Description

Fuel Pump Secondary Circuit/Open

What does trouble code P023F mean?

The P023F fault code typically indicates that there is an issue in the fuel pump secondary circuit, which can either be an open circuit or a failure in the fuel pump control module. This can cause a range of issues such as the car failing to start, sputtering, or stalling while driving.

To diagnose and fix this issue, the first step is usually to check the wiring and connections that lead to the fuel pump. If there is no visible damage or issues found, then the fuel pump control module may need to be tested and replaced if necessary.

It is important to have this issue addressed promptly to avoid any potential safety hazards while driving and to prevent further damage to the fuel system.


What are the symptoms of the P023F code?

Here are some potential symptoms of a P023F fault code on cars:

  • Check engine light (CEL) is on
  • Vehicle may not start or stalls
  • Reduced engine performance or power
  • Difficulty in acceleration
  • Fuel pump may continue to run after engine is turned off
  • Fuel pump may not run at all

It is important to note that these symptoms can vary from vehicle to vehicle and additional diagnostics may be needed to pinpoint the exact issue.


What causes the P023F code?

There are several possible causes for the P023F fault code:

  • A faulty fuel pump or fuel pump relay
  • A problem with the fuel pump wiring or connectors
  • A blown fuse related to the fuel pump circuit
  • A faulty fuel pressure sensor
  • A problem with the PCM (Powertrain Control Module) or other control module

Diagnosing the exact cause of the fault code may require a mechanic or technician to perform further testing and inspection.

Possible Solutions

How to fix P023F?

Here are the steps to fix the P023F fault code on cars:

  1. Check the fuel pump fuse - Check the fuel pump fuse and replace it if it's blown.

  2. Inspect the wiring - Check the fuel pump wiring for damage, corrosion or loose connections. Replace the wiring if necessary.

  3. Check fuel pump relay - Check the fuel pump relay and replace it if necessary.

  4. Inspect the fuel pump - Check the fuel pump for proper operation and replace it if necessary.

  5. Inspect the fuel pressure sensor - Check the fuel pressure sensor for proper operation and replace it if necessary.

  6. Check the fuel pressure - Check the fuel pressure and ensure it's within the manufacturer's specifications. If not, repair or replace any faulty components.

  7. Clear the code - Clear the P023F fault code from the vehicle's computer system using an OBD-II scanner.

It's recommended to seek professional help if you are unsure about any of these steps.