Video Summary
A P008A code indicates low fuel system pressure and may be triggered if the gas is low. It is important to troubleshoot to determine the specific reason for this code.To troubleshoot this code, it is recommended to get a diagram of the vehicle's fuel system along with wiring schematics, as components may be located and named differently depending on the specific vehicle.
Possible causes of a P008A code include:
- A bad fuel pressure sensor. This can be tested to see if the pressure reading changes slightly when the vehicle is running.
- A bad fuel pressure regulator, which can be named differently depending on the manufacturer, but basically, it opens and closes to control the fuel pressure.
- A wiring issue going to any of the fuel system components. This includes checking for blown fuses or bad relays.
- A clogged fuel filter, particularly in vehicles with an inline fuel filter.
- A bad fuel pump, either a high-pressure fuel pump mounted to the engine or a low-pressure fuel pump located inside the gas tank.
- A bad computer or control module controlling the fuel system.
Testing with an OBD2 scanner with live data can help in seeing the fuel system pressure to indicate if this is an issue on the low or high pressure side.
