What is P0230 fault code and what does it mean? What is Fuel Pump Primary Circuit Failure? How can I fix P0230 fault codes? What are the symptoms and causes for the P0230 fault code

What is the P0230 Fault code? What does it signify?

A relay controlling the engine control module (ECM/PCM) activates the fuel pump. The fuel pump relay generates electricity that turns the fuel pump on or off.

P0230 refers to a malfunctioning fuel pump primary circuit. This code indicates that the fuel pump primary is having problems when it is commanded to “On” or “Off”. If the relay is active, the ground circuit should have a low voltage and a close match to the battery voltage when it’s disabled. If the PCM detects an abnormal voltage signal, code P0230 will be activated.

 

What is the P0230 Fault Code?

Here are some reasons why P0230 should be set:

  • – Blown fuel pump fuse
  • – Problems with the fuel pump circuit, either short or open
  • – The fuel pump’s wires are bent or broken.
  • – Defective fuel cutting-off switch. This switch shuts down the fuel flow when there is an accident. Even a minor shock can cause the fuel pump to stop working if activated.
  • – Defective fuel pump relay
  • – Low battery voltage

 

What are the symptoms of the P0230 Fault Code?

These symptoms may be present in vehicles with code P0230.

  • – Illumination for the check engine light
  • – No working fuel pump (so that the engine doesn’t start)
  • – The fuel pump that is continuously running when the ignition switch is turned on. If the starter isn’t started, it will stop working for a while.
  • Engine stalling

How do I fix the P0230 fault code?

  • First, ensure that your battery voltage is at least 12.6V with the engine off and 13.5V with the engine running. Before you continue, fix any problems.
  • – Check the fuel pumps fuse. If the fuse blows, it means there is a short-circuit somewhere in the system. The fuse could blow again if you simply replace it without fixing the short circuit problem.
  • – With the fuel pump relay removed, you should measure at least 4 Ω from the pump to ground. If you measure <4 Ω, you should find and repair the short.
  • – If you get an open circuit of >10 kΩ, the short circuit is in the pump. Measure the resistance between the terminals while the pump is off. If you are measuring less than 4 Ω, replace the pump.
  • – Check the fuel pumps relay. To test the system, you can use relays such as headlights and wipers. If swapping relays fails, the fuel pump relay may be the problem. If this doesn’t work, reset your relays.
  • – Inspect the wiring and connections to the fuel pump. Repair any broken or melted wires and connectors.
  • – Change the fuel pump.

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