P0001 Engine Trouble Code

P0001 Fuel Volume Regulator Control Circuit/Open

P0001 Engine Trouble Code
P0001 Engine Trouble Code
OBD-II Diagnostic Powertrain (P) Trouble Code For Engine Intake Valve Control Solenoid Circuit Low Ambient Air Temperature Sensor Circuit Low Cold Start Injector 1 Malfunction Crankshaft Position Sensor A Circuit Low Input

This code relates to the the electrical system as part of the fuel volume regulator system. Automotive fuel systems consist of many components, the fuel tank, fuel pump, filter, lines, injectors, etc. One component in high pressure fuel systems is a high pressure fuel pump. It's job is to increase the fuel pressure for the very high pressure needed at the fuel rail for the injectors. These high pressure fuel pumps have a low pressure side and high pressure side, and a fuel volume regulator which controls the pressure. For this P0001 code, it refers to an electrical reading that is "open".

P0001 Fault Symptoms :

  1. Check engine light comes on
  2. Engine stalling or misfiring
  3. Engine performance issues
  4. Car not starting    

Possible Solutions

First, check for known Technical Service Bulletins (TSBs) for your year/make/model. If there is a known TSB that addresses this issue, it can save you time & money during diagnosis. Next, you'll want to visually inspect the wiring and connectors pertaining to the fuel volume regulator circuit and system. Look for obvious breaks in the wires, corrosion, etc. Repair as necessary. The fuel volume regulator (FVR) is a two-wire device with the wires both going back to the PCM. You should not apply direct battery voltage to the wires or you could damage the system. Refer to a factory service manual for more specific troubleshooting steps for your year/make/model/engine.

P0001 OBD-II Diagnostic Powertrain (P) Trouble Code Description

P0001 OBD-II Trouble Code Fuel Volume Regulator Control Circuit/Open is the generic definition for the P0001; however your vehicles manufacturer may have a different definition for the P0001 code. P0001 code.