What Does P0231 Mean? 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). When the Ignition is turned on, the PCM or Fuel Pump Control Module will activate the fuel pump. If the PCM detects an incorrect signal to or from the fuel pump, it will set code P0231. engine code P0231P0231 fixobd P0231dtc P0231obd code P0231obd2 P0231P0231 car codediagnostic code P0231car code P0231check engine code P0231fehlercode P0231P0231 fiatcodigo P0231codigo falla P0231P0231 kody b??dówcodigo de falla P0231 What are the common causes of P0231 ? Likely causes are a faulty fuel pump relay, a faulty PCM, the fuel pump safety interrupt switch has been activated (Ford), or an open circuit in the fuel pump wiring or connectors. How do you troubleshoot P0231 ? Pack the connector cavity with dielectric silicone compound (same stuff they use for light bulb sockets and spark plug wires) and reassemble. Look for missing ground strap or a rusty ground where the fuel tank is grounded to the frame. Check for damage to the wiring harness connector. Oxygen sensors signal the engine management computer the amount of oxygen present in the exhaust, which is used in determining and controlling the fuel ratio. Searches related to P0231 - Fuel Pump Secondary Circuit Low p0231 powerstroke p0231 7.3 powerstroke fuel pump secondary circuit malfunction p0231 chevy silverado p0231 6.5 diesel fuel pump circuit low voltage low voltage to fuel pump ford fuel pump secondary circuit high
