P0002 Fault Code

P0002 OBD-II Trouble Code Short Description

Fuel Volume Regulator Control Circuit Range/Performance

What does trouble code P0002 mean?

The P0002 fault code relates to the Fuel Volume Regulator Control Circuit Range/Performance. This code indicates that there is an issue with the control circuit for the fuel volume regulator, which is responsible for regulating the amount of fuel that is delivered to the engine.

The "range/performance" part of the code suggests that the control circuit is not functioning within its expected range or is not performing at its optimal level. This could be due to various factors such as a faulty regulator control solenoid, a wiring issue, or a problem with the engine control module (ECM).

To diagnose and resolve the P0002 code, several steps can be taken. First, the technician will typically perform a visual inspection of the fuel volume regulator control circuit and its associated components, looking for any obvious signs of damage or wear. They will also check the wiring and connectors for any loose connections or corrosion.

Next, they may use a scan tool to retrieve additional diagnostic trouble codes (DTCs) and check the fuel pressure readings. This can help identify any underlying issues that could be contributing to the code.

If no other issues are found, the fuel volume regulator control solenoid may need to be tested. This involves checking its resistance and comparing it to the manufacturer's specifications. If the solenoid is found to be faulty, it will need to be replaced.

In some cases, the issue may lie with the ECM. If this is suspected, further diagnostics will need to be performed to confirm the problem and determine if the ECM needs to be repaired or replaced.

Overall, the P0002 code signifies a problem with the fuel volume regulator control circuit's range or performance. Proper diagnosis and repair by a qualified technician are necessary to resolve the issue and restore optimal fuel delivery to the engine.


What are the symptoms of the P0002 code?

The P0002 fault code, which is related to the Fuel Volume Regulator Control Circuit, may cause the following symptoms in cars:

  • Decreased fuel efficiency
  • Rough idle
  • Engine stalls or struggles to start
  • Loss of power while driving
  • Engine misfires
  • Check Engine Light (CEL) or Malfunction Indicator Lamp (MIL) is illuminated

It is important to note that these symptoms may vary depending on the make and model of the vehicle. If you experience any of these issues, it is recommended to have your car diagnosed and repaired by a qualified mechanic.


What causes the P0002 code?

The P0002 fault code typically indicates a problem with the fuel volume regulator control circuit. Some possible causes for this error code include:

  1. Malfunctioning fuel volume regulator control solenoid.
  2. Wiring issues or damaged connectors related to the fuel volume regulator control circuit.
  3. Faulty fuel volume regulator.
  4. Issues with the fuel pressure sensor.
  5. Problems with the fuel pump or fuel filter.

It is important to note that the exact cause can vary depending on the specific make and model of the car. It is recommended to consult a professional mechanic or refer to the vehicle's service manual for a more accurate diagnosis and repair instructions.

Possible Solutions

How to fix P0002?

To fix the P0002 fault code, you can try the following steps:

  1. Check the fuel pressure regulator: Inspect the fuel pressure regulator for any signs of damage or blockage. If necessary, clean or replace the regulator.

  2. Inspect the fuel system: Check the entire fuel system for any leaks, clogs, or other issues. Ensure there is proper fuel flow to the engine.

  3. Test the fuel pressure sensor: Use a diagnostic tool to test the fuel pressure sensor. If it is faulty, replace it.

  4. Check the wiring and connections: Inspect the wiring and connections related to the fuel volume regulator control circuit. Look for any loose or damaged wires and repair or replace as needed.

  5. Reset the fault code: After making any necessary repairs or replacements, clear the fault code using a diagnostic tool and see if it returns. If it does not reappear, the issue may be resolved.

If you are unsure or uncomfortable performing these steps on your own, it is recommended to take your car to a qualified mechanic for further diagnosis and repair.