Need car parts? Select your vehicle
Reading Time: 3 minutes

The vehicle’s fuel pump is responsible for transferring fuel from the fuel tank to the fuel injectors at the engine. When your vehicle’s fuel pump develops an issue, the P023F code or other related trouble codes can trigger.

What Does the P023F Code Mean?

The P023F code is defined as Fuel Pump Secondary Circuit/Open. The powertrain control module (PCM) triggers this code when it detects a problem with the fuel pump or its circuit. The fuel pump relay is responsible for supplying electric current to the fuel pump when it’s activated by the PCM. 

fuel pump repair done by a mechanic
The code P023F means that your vehicle has fuel pump issues.

The fuel injectors need to receive fuel at a specific pressure to ensure the right amount of fuel is injected into the combustion chamber. If the fuel pump develops issues, the engine might not receive fuel at the appropriate pressure, which can lead to decreased performance or an inability for the vehicle to start.

Note: The definition of the P023F code can be different depending on the vehicle manufacturer. Consult the appropriate repair manual or repair database for the exact code definition.

What are the Common Causes of the P023F Code?

These are the most common issues related to the P023F code:

  • Failed fuel pump
  • Failed fuel pump relay
  • Faulty fuel pump wiring
  • Faulty fuel pump relay wiring
  • PCM failure or software in need of an update

What are the Common Symptoms of the P023F Code?

Your vehicle might exhibit the following symptoms when the P023F code is stored:

car fuel pump image
A failed fuel pump, or issues with its relay or wiring can trigger the P023F code.

How to Diagnose the P023F Code

If your vehicle’s PCM has triggered the P023F code, you need to identify the cause. Properly diagnosing the issue should be the first step before performing any kind of repairs. There are several components that might cause the issue such as the fuel pump, fuel pump relay, PCM, or its wiring. These components are often hidden inside the engine bay. Reaching and testing them might require special knowledge and tools.

Keep in mind that vehicle designs and their respective repair procedures vary depending on the manufacturer. Diagnosing the concerned components might require special knowledge and tools.

If you aren’t familiar with vehicle repair, take your car to a mechanic for a proper diagnosis. Otherwise, you can consult online video resources to learn more about the code.

How to Fix the P023F Code

Before attempting to do any repairs, know that there isn’t a magic-bullet to fix diagnostic trouble codes (DTC) because different vehicle models are designed differently. If you don’t have much experience troubleshooting DTCs, then we recommend leaving the task to a professional mechanic.

You can try to do the job yourself, but you need to make sure to know the vehicle-specific repair procedures before you get started. Luckily, this information is available online. Chilton repair manuals or a subscription to an online repair database like ALLDATA DIY can give you information on the correct diagnostic and repair procedure to clear diagnostic trouble codes like the P023F code.

Any information provided on this Website is for informational purposes only and is not intended to replace consultation with a professional mechanic. The accuracy and timeliness of the information may change from the time of publication.

File Under : OBD-II Trouble Codes Tagged With :
wheel hubs and components
Notify of
Inline Feedbacks
View all comments

View all Questions & Answers Answers BE PART OF OUR COMMUNITY: Share your knowledge & help fellow drivers Join Now
Copyright ©2022, Inc. All Rights Reserved.