How to Fix P0231 Fuel Pump Primary Circuit Malfunction

Introduction

If you’re experiencing a P0231 Fuel Pump Primary Circuit Malfunction, it can be frustrating and confusing. This error code indicates that there is an issue with the fuel pump primary circuit, which can cause your vehicle to stall or not start at all. However, with a little bit of knowledge and some DIY skills, you can fix this problem yourself. In this article, we’ll provide you with step-by-step instructions on how to fix P0231 Fuel Pump Primary Circuit Malfunction.

What is P0231 Fuel Pump Primary Circuit Malfunction?

P0231 Fuel Pump Primary Circuit Malfunction is an error code that indicates there is an issue with the fuel pump primary circuit. The fuel pump primary circuit is responsible for providing power to the fuel pump relay, which in turn powers the fuel pump. If there is an issue with the fuel pump primary circuit, it can cause your vehicle to stall or not start at all.

Step-by-Step Guide to Fix P0231 Fuel Pump Primary Circuit Malfunction

Step 1: Check the Fuel Pump Relay

The first step in fixing P0231 Fuel Pump Primary Circuit Malfunction is to check the fuel pump relay. The fuel pump relay is located in the engine compartment fuse box. To check the fuel pump relay, follow these steps:

Locate the engine compartment fuse box.
Remove the cover of the fuse box.
Locate the fuel pump relay.
Remove the fuel pump relay.
Inspect the fuel pump relay for any signs of damage or corrosion.
If the fuel pump relay is damaged or corroded, replace it with a new one.

Step 2: Check the Fuel Pump Fuse

The next step in fixing P0231 Fuel Pump Primary Circuit Malfunction is to check the fuel pump fuse. The fuel pump fuse is located in the engine compartment fuse box. To check the fuel pump fuse, follow these steps:

Locate the engine compartment fuse box.
Remove the cover of the fuse box.
Locate the fuel pump fuse.
Inspect the fuel pump fuse for any signs of damage or corrosion.
If the fuel pump fuse is damaged or corroded, replace it with a new one.

Step 3: Check the Fuel Pump Wiring

The third step in fixing P0231 Fuel Pump Primary Circuit Malfunction is to check the fuel pump wiring. To check the fuel pump wiring, follow these steps:

Locate the fuel pump wiring harness.
Inspect the wiring harness for any signs of damage or corrosion.
If the wiring harness is damaged or corroded, repair or replace it.

Step 4: Check the Fuel Pump

The fourth step in fixing P0231 Fuel Pump Primary Circuit Malfunction is to check the fuel pump. To check the fuel pump, follow these steps:

Locate the fuel pump.
Disconnect the fuel pump wiring harness.
Connect a multimeter to the fuel pump wiring harness.
Turn the ignition key to the “ON” position.
Check the multimeter for voltage.
If there is no voltage, the fuel pump is faulty and needs to be replaced.

Conclusion

In conclusion, P0231 Fuel Pump Primary Circuit Malfunction can be a frustrating and confusing issue. However, with a little bit of knowledge and some DIY skills, you can fix this problem yourself. By following the step-by-step guide provided in this article, you can diagnose and fix the issue with your fuel pump primary circuit.

FAQs

1. Can I drive my car with P0231 Fuel Pump Primary Circuit Malfunction?

It is not recommended to drive your car with P0231 Fuel Pump Primary Circuit Malfunction. This issue can cause your vehicle to stall or not start at all, which can be dangerous if you’re driving on the road.

2. How much does it cost to fix P0231 Fuel Pump Primary Circuit Malfunction?

The cost to fix P0231 Fuel Pump Primary Circuit Malfunction can vary depending on the cause of the issue. If it’s a simple fix like replacing a fuse or relay, it can cost as little as $20. However, if the issue is with the fuel pump itself, it can cost upwards of $500.

3. Can I fix P0231 Fuel Pump Primary Circuit Malfunction myself?

Yes, you can fix P0231 Fuel Pump Primary Circuit Malfunction yourself if you have some DIY skills and knowledge. By following the step-by-step guide provided in this article, you can diagnose and fix the issue with your fuel pump primary circuit. However, if you’re not comfortable working on your car, it’s best to take it to a professional mechanic.