P0230 Fault Code

P0230 OBD-II Trouble Code Short Description

Fuel Pump Primary (Control) Circuit Malfunction

What does trouble code P0230 mean?

The P0230 fault code indicates that there is a malfunction in the fuel pump primary (control) circuit. This means that there is a problem with the signal or power supply that controls the fuel pump.

The most common causes of this error code include a faulty fuel pump relay, a damaged fuel pump, a broken wire, or a bad fuel pump control module.

To diagnose and fix this issue, a mechanic will first need to inspect the wiring and connections for signs of damage or corrosion. They may also use specialized diagnostic tools to check the fuel pump relay and control module.

Once the underlying issue has been identified, the mechanic will repair or replace the damaged parts as needed. Ignoring this error code can lead to reduced engine performance, decreased fuel economy, and even engine damage.


What are the symptoms of the P0230 code?

The symptoms of a P0230 fault code on cars may include:

  • Engine misfires or stalls
  • Difficulty starting the vehicle
  • Reduced fuel economy
  • Check Engine Light (CEL) illumination
  • The fuel pump may run continuously
  • The fuel pressure may be too low or too high.

However, it is important to note that symptoms may vary depending on the make and model of the vehicle and the severity of the issue.


What causes the P0230 code?

There are several potential causes for a P0230 fault code, including:

  • Faulty fuel pump relay: A malfunction in the control circuit of the fuel pump can be caused by a faulty fuel pump relay. The relay may not be able to properly distribute power to the fuel pump.
  • Worn fuel pump: A worn-out fuel pump can cause a malfunction in the control circuit.
  • Corroded fuel pump connectors: Corrosion on the fuel pump wiring can cause electrical resistance and lead to the malfunction of the fuel pump.
  • Malfunctioning fuel pump driver module: The module that controls the actions of the fuel pump can become damaged, leading to a P0230 fault code.
  • Defective fuel pump fuse: An issue with the fuse that powers the fuel pump can cause the fuel pump to stop working and trigger the fault code.

It's recommended to get a professional diagnosis to determine the exact cause of the fault code.

Possible Solutions

How to fix P0230?

To fix the P0230 fault code on cars, follow these steps:

  1. Check the fuel pump relay: The fuel pump relay is responsible for powering the fuel pump. Check the relay to make sure it is functioning properly. If it is faulty, replace it.

  2. Check the fuel pump fuse: The fuel pump fuse protects the fuel pump circuit. If the fuse is blown, it will cause the P0230 code. Check the fuse and replace if necessary.

  3. Check the wiring for damage: The P0230 code could be caused by damaged wiring between the fuel pump relay and the fuel pump. Inspect the wiring for damage, cracks or corrosion and replace if needed.

  4. Replace the fuel pump: If the fuel pump is faulty, it could cause the P0230 code. Replace the fuel pump and retest the system.

  5. Check the fuel pressure sensor: The fuel pressure sensor measures the pressure of the fuel in the system. If the sensor is faulty, it could cause the P0230 code. Replace the sensor if needed.

  6. Check the PCM: If all the above steps fail, the problem may be with the Powertrain Control Module (PCM). Have the PCM checked by a qualified mechanic or take the car to a dealership for further diagnosis and repair.