Technical Description of OBD-II Trouble Code
The performance of the Fuel Volume Regulator Control Circuit is outside the acceptable range.
What does that signify?
This diagnostic trouble code (DTC) is a standard powertrain code that is applicable to vehicles equipped with OBD-II, including Ford, Dodge, Vauxhall, VW, Mazda, and others. Although it is a generic code, the specific repair steps may vary depending on the make and model of the vehicle.
P0002 is not a very common trouble code and is typically observed in common rail diesel (CRD) and/or diesel engine, as well as gasoline direct injection (GDI) equipped vehicles.
This code pertains to the electrical system within the fuel volume regulator system. Automotive fuel systems consist of various components such as the fuel tank, fuel pump, filter, lines, and injectors. One important component in high pressure fuel systems is the high pressure fuel pump, which is responsible for increasing the fuel pressure to the required level at the fuel rail for the injectors. These high pressure fuel pumps have a low pressure side and a high pressure side, along with a fuel volume regulator that controls the pressure. In the case of the P0002 code, it indicates an electrical reading that falls outside the normal parameters.
This code is related to P0001, P0003, and P0004.
Symptoms
The symptoms of a P0002 DTC may include:
Potential Causes
The potential causes of this engine code may include:
Possible Solutions
First, check for any known Technical Service Bulletins (TSBs) that pertain to your specific year, make, and model. If there is a TSB addressing this issue, it can save you time and money during the diagnosis process.
Next, visually inspect the wiring and connectors related to the fuel volume regulator circuit and system. Look for any obvious breaks in the wires, signs of corrosion, or other issues. Repair or replace as necessary.
The fuel volume regulator (FVR) is a two-wire device with both wires connected to the PCM. It is important not to apply direct battery voltage to these wires, as it could cause damage to the system.
For more specific troubleshooting steps based on your year, make, model, and engine, refer to a factory service manual.
