What does fuel pump circuit open mean?
OBD-II Code P0627 is defined as a Fuel Pump “A” Control Circuit/Open. The Fuel Pump enables the transfer of fuel from the tank to the fuel injectors. If the engine control module (PCM) detects the fuel pump is not operating properly, the PCM will set code P0627.
Will a fuel pump relay throw a code?
Likewise, will a bad fuel pump relay throw a code? A bad fuel pump could cause the symptoms and not set a code at all. But you’re right, the simpler solution is that the MAF and/or SPOUT wiring is faulty, since that could cause both the cutting out and the codes.
What codes would a bad fuel pump cause?
The trouble codes associated with a bad fuel pump are P0201, P0267, P0268, P0231, P0232, P0030, and P0087. Keep in mind the trouble codes will also depend on the make and model of your vehicle.
When do I get an error code on my fuel pump?
When the PCM sees voltage below the normal range in the main power circuit of the fuel pump relay, it activates this particular error code. This particular error code, just like other trouble codes, also illuminates the Check Engine light as well.
What to do if your fuel pump relay stops working?
Connect one lead to one of the power circuit pins, and connect the other lead to the other power terminal. If you hear a beeping sound, your fuel pump relay’s power pins have shorted. Replace the relay. You can test the fuel pump relay, along with many other parts in your car, with the cheap and handy multimeter. (Photo Source: carcody)
What to do if your fuel rail pressure sensor is not working?
If there is no battery voltage at the fuel pump connector, they will check the fuse circuit, fuel pump relay circuit, and power control module circuit for any faults. If these components are operational, inspect the fuel rail pressure sensor.
Can a bad fuel pump throw a check engine light?
Usually, a failing fuel pump will produce one of the following systems that could potentially mean the bad fuel pump will throw a check engine light. One of the first symptoms that you will notice with the fuel tank turning bad or being damaged is a loud whining sound that is coming from under your hood.