The P0231 trouble code indicates a low electrical signal in the fuel pump’s secondary circuit. This code typically points to issues related to the secondary circuit of the fuel pump, which could affect its performance.
Fuel Pump Secondary Circuit Low
Code symptoms P0231.
1. Engine misfires or sputtering.
2. Engine hesitation during acceleration.
3. Failure of the engine to start.
This code is common in brands such as:: Chevrolet, Renault, Ford, Toyota, Nissan, Mercedes Benz, Honda.
Causes of the code P0231.
1. Faulty fuel pump.
2. Wiring or connector issues within the fuel pump’s secondary circuit.
3. Problems with the fuel pump control module.
Code Solutions P0231.
1. Test the fuel pump to ensure it’s functioning correctly and replace it if necessary.
2. Inspect the wiring and connectors in the fuel pump’s secondary circuit, repairing any issues found.
3. If the fuel pump control module is suspected to be faulty, have it diagnosed and replaced as needed.