What does code P0231 mean?
What does code P0231 mean?
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).
What is the difference between primary and secondary voltage?
For this tutorial we will define the “primary” side of the transformer as the side that usually takes power, and the “secondary” as the side that usually delivers power. In a single-phase voltage transformer the primary is usually the side with the higher voltage.
What causes the intermitent blinking battery light to be intermittent?
So the alternator is working but what could cause the battery light to be intermittent. When I say intermettent I mean that it comes on for 3 seconds, goes out for 5, comes on for 2 seconds, going our for 3.
Why does my PCM stall when I Turn on the engine?
The MAP sensor senses intake vacuum, which the PCM uses to estimate load so it can adjust the air/fuel mixture accordingly. If the MAP sensor isn’t reading right, the PCM will receive bad information and possibly add or subtract more fuel than it should causing the engine to stall.
Why does intermittent stalling occur in a car?
One of the more unusual causes of intermittent stalling we’ve heard about is a defective vehicle speed sensor. When the vehicle stops moving, the PCM may not engage the idle speed motor (carbureted engines) or idle air bypass motor (fuel injected engines) so the engine will idle normally.
Why does my fuel pump have a p0231 DTC?
The PCM monitors this feedback circuit to ensure that there is proper voltage being sent to the fuel pump. As it activates the fuel pump relay, it expects to see battery voltage on the feedback circuit. If it sees voltage that is too low or no voltage at all, it may set P0231. Symptoms of a P0231 DTC may include:
What is the p0231 code on a Ford Windstar?
2000 Ford Windstar 3.8L van 193,626 miles P0231 code van fluctuates, jerks, cuts off @ times when stopped, starts right back up drive some more continues to repeat…. 2003 ford expedition with code P0231 when running.
What are the potential causes of a P1000?
Potential Causes. Potential causes of a P1000 include: The battery or PCM has been disconnected (Ford, Mazda, Jaguar) The diagnostic trouble codes have been cleared (Ford, Mazda, Jaguar) An OBD monitor concern occured before completion of the drive cycle (Ford)
What causes Ford P1000 DTC drive cycle OBD codes?
Potential causes of a P1000 include: The battery or PCM has been disconnected (Ford, Mazda, Jaguar) The diagnostic trouble codes have been cleared (Ford, Mazda, Jaguar) An OBD monitor concern occured before completion of the drive cycle (Ford)
