What is a fuel pump secondary circuit low?

What is a fuel pump secondary circuit low?

OBD-II Code P0231 is defined as a Fuel Pump Secondary Circuit Low. The Fuel Pump enables the transfer of fuel from the fuel tank to the fuel injectors in the engine. The Fuel Pump is controlled by the engine computer (PCM) or the Fuel Pump Control Module (most newer vehicles).

How do I fix P0231 code?

What repairs can fix the P0230 code?

  1. Repairing or replacing the fuel pump fuse or fusible link, and replacing the fuel pump.
  2. Replacing the fuel pump relay.
  3. Replacing the fuel pump only.

How do you fix P0231?

If you’re seeing this P0231 OBD2 Trouble Code it’s related to your fuel pump or fuel pump relay. I suggest replacing the Fuel Pump Relay, and checking if the Fuel Pump is going bad. It’s also common to replace the Central Junction (fuse) Box, but this is expensive and not always necessary.

How much does it cost to replace a fuel pump relay?

A fuel pump relay will typically cost about $25 for the part, and a mechanic may charge a minimum of an hour’s worth of labor to replace it. The vehicle not starting may be a fuel pump or relay along with other possible ignition problems.

Is the secondary circuit high or low voltage?

The low-voltage side is called the primary circuit, and the secondary circuit is the one with high voltage. To power the primary circuit, the battery provides the low voltage and high current flow. The induction coil raises the low voltage in the primary circuit to that in the secondary circuit.

What are signs of fuel pump going out?

6 Common Signs of a Faulty Fuel Pump

  • Whining Noise From the Fuel Tank. If you notice a whining noise coming from the location of your fuel tank, the fuel pump is probably beginning to fail.
  • The Engine Sputters or Surges.
  • Trouble Starting the Car.
  • Loss of Power Under Load.
  • Reduced Gas Mileage.
  • Stalling at High Temperatures.

What is the leading cause of secondary ignition failure?

The cause could be worn or wide-gap spark plugs, a wide rotor air gap or a break in the coil lead. High resistance also can be caused by nonelectrical problems like late ignition timing or a lean air/fuel mixture.

What happens in the secondary circuit?

Secondary circuits are those circuits supplied from transformer output windings that are electrically separated from the input windings. A transformer is an electrical component that can be used to step up or down the input ac voltage signal.

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