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Engine Fault Code P0002

Fuel Volume Regulator Control Circuit Range/Performance

Care Engine Code Reader
The Engine Fault Code P0002 refers to a problem with the fuel volume regulator control circuit. This code indicates that the fuel volume regulator is not performing within the expected range or performance parameters. This can lead to issues with fuel delivery to the engine, affecting performance and efficiency.

While the basic meaning of P0002 is generally consistent across many manufacturers, specific interpretations or related issues can vary by make and model. Here are some potential alternative meanings or related issues for different manufacturers:

1. Porsche: Similar to the general definition, but may also indicate issues with the fuel pump or fuel pressure sensor.

2. Mini: This code might indicate a problem with the fuel pressure regulator or the fuel delivery system, particularly in turbocharged models.

3. Mercedes: For Mercedes vehicles, this code can often relate to the fuel control module or issues with the high-pressure fuel pump.

4. Audi: In Audis, P0002 might also point to concerns with the fuel system, including the fuel pump control module or wiring issues.

5. Jaguar: In Jaguar vehicles, this code can be associated with fuel pressure regulation problems or issues with the engine control unit (ECU).

6. Land Rover: For Land Rover, it might indicate a fault in the fuel system`s electronic control, including the fuel pump or pressure sensor.

If you encounter this code, its essential to perform a thorough diagnostic to pinpoint the exact issue. Checking wiring, connectors, and the fuel system components can help identify the root cause.
The Engine Fault Code P0002 indicates a problem with the Fuel Volume Regulator Control Circuit, specifically related to its range or performance. This code can be triggered by various issues, and while the core problem is similar across different manufacturers, there can be some variations. Here are the common causes:

1. Faulty Fuel Volume Regulator: The regulator itself may be malfunctioning, which can cause improper fuel flow.

2. Wiring Issues: Damaged, frayed, or corroded wires in the control circuit can lead to poor signals being sent to the regulator.

3. Bad Connector: A loose or corroded connector can disrupt the electrical connection, leading to performance issues.

4. Fuel Pump Problems: If the fuel pump isnt delivering the right amount of fuel, it can affect the regulator`s performance.

5. Clogged Fuel Filter: A blocked filter can restrict fuel flow, causing the regulator to operate improperly.

6. Faulty Engine Control Module (ECM): In some cases, the ECM may not be sending the correct signals to the fuel volume regulator.

7. Vacuum Leaks: A vacuum leak can affect the fuel system`s pressure, impacting the regulator`s ability to perform correctly.

Manufacturer-Specific Considerations:

Porsche: Issues may stem from the high-pressure fuel pump or the fuel pressure sensor, which are critical in Porsches fuel management systems.

Mini: Mini models often have more complex fuel systems, so issues could arise from the integrated fuel tank and pump assembly.

Mercedes: Mercedes vehicles may have additional sensors that monitor fuel pressure, which can also trigger this code if they fail.

Audi: Audi`s fuel systems can be sensitive to changes in pressure, so a failing pressure sensor can be a common culprit.

Jaguar: Some Jaguar models have unique fuel delivery systems that may require specialized diagnostic tools to pinpoint the issue.

Land Rover: Land Rover vehicles might face issues with the fuel pump module, which is often located in the fuel tank, making access more complicated.

If you encounter code P0002, it`s best to start with a thorough inspection of the fuel system components and wiring. Checking for any visible damage or loose connections can often lead you to the problem.
The Engine Fault Code P0002 indicates an issue with the fuel volume regulator control circuit. This code can vary in its implications depending on the make and model of the vehicle. Heres a general approach to fixing this issue, along with manufacturer-specific considerations for Porsche, Mini, Mercedes, Audi, Jaguar, and Land Rover.

General Steps to Fix P0002:

1. Check for Other Codes: Use an OBD-II scanner to check if there are other related codes. Fixing these may resolve the P0002 code.

2. Inspect Wiring and Connectors: Look for damaged, frayed, or corroded wires and connectors related to the fuel volume regulator. Repair or replace any faulty components.

3. Test the Fuel Volume Regulator: Use a multimeter to test the regulator`s resistance and functionality. If it`s faulty, replace it.

4. Check Fuel Pressure: Ensure the fuel pressure is within the manufacturer`s specifications. A faulty fuel pump can cause low pressure, leading to this error.

5. Inspect the Fuel Filter: A clogged fuel filter can restrict fuel flow, causing performance issues. Replace it if necessary.

6. Reset the Code: After making repairs, clear the code with an OBD-II scanner and take the vehicle for a test drive to see if the code returns.

Manufacturer-Specific Considerations:

#Porsche:
– Common Issues: Check the fuel injectors and fuel pump, as they can affect fuel volume.
– Specific Tools: Use a Porsche-specific scan tool for precise diagnostics.

#Mini:
– Common Issues: Look for issues with the fuel pump control module. It can sometimes fail and cause this code.
– Special Note: Mini vehicles often have unique wiring harness issues due to their compact design.

#Mercedes:
– Common Issues: Check the fuel pressure regulator and the fuel pump relay. These components can often cause this code.
– Special Note: Mercedes vehicles may have a specific adaptation procedure after replacing components.

#Audi:
– Common Issues: Look for vacuum leaks or issues with the fuel pump control module.
– Special Note: Audis use of a CAN bus system may require special tools for diagnostics.

#Jaguar:
– Common Issues: Inspect the fuel system for leaks or blockages. Jaguars may have complex fuel systems.
– Special Note: Some models may require software updates after repairs.

#Land Rover:
– Common Issues: The fuel pump and fuel pressure regulator are common culprits. Check the fuel tank for debris.
– Special Note: Land Rover vehicles may have specific service bulletins related to fuel system issues.


Diagnosing and fixing a P0002 code can involve several steps, and the exact approach may vary based on the vehicle make and model. Always consult the vehicle`s service manual for specific details and specifications. If you`re unsure, it`s often best to consult a professional mechanic.
Driving with a P0002 code, which indicates a problem with the fuel volume regulator control circuit, can be risky. This code suggests that the engine control module (ECM) is not getting the right signals from the fuel volume regulator. Heres what you need to know about driving with this code, along with manufacturer-specific insights:

General Risks:
1. Performance Issues: You may notice reduced engine performance, poor acceleration, or stalling.
2. Fuel Economy: Fuel efficiency can drop, leading to more frequent trips to the gas station.
3. Engine Damage: Prolonged driving with this code may lead to more serious engine problems.

Manufacturer-Specific Insights:

1. Porsche:
– Risk Level: High. Porsche engines are finely tuned, and any fuel delivery issue can lead to significant performance loss and potential engine damage.
– Get it diagnosed as soon as possible.

2. Mini:
– Risk Level: Moderate. While you may still drive, performance can be affected, especially during acceleration.
– Address the issue soon to avoid further complications.

3. Mercedes-Benz:
– Risk Level: High. Mercedes vehicles often have complex fuel systems, and ignoring this code can lead to costly repairs.
– Have it checked out immediately.

4. Audi:
– Risk Level: Moderate to High. Similar to Mini, you might experience performance issues, but the car may still run.
– Dont delay repairs to maintain performance.

5. Jaguar:
– Risk Level: High. Jaguars can be sensitive to fuel system issues, leading to potential engine failure.
– Seek professional help right away.

6. Land Rover:
– Risk Level: Moderate. While you may still drive, performance can drop, especially in off-road conditions.
– Its best to get it diagnosed to avoid further damage.


While it might be possible to drive for a short time with a P0002 code, its not advisable. The risks vary by manufacturer, but in most cases, its best to address the issue as soon as possible to avoid more significant problems down the road. Always consult a professional mechanic for a thorough diagnosis and repair.

OBD Codes Explained

Engine Codes

P is for PowerTrain - Engine and Transmission.

P0 Indicates Generic Powertrain Codes

P0 Codes indicate problems with the powertrain and are common for all vehicles using the OBD-II Standard.

P1 Enhanced Manufacturer Specific Codes

P1 Codes are specific to manufacturers.

Sub-System

The 3rd Digit indicates the Sub-System

1 – Emission Management

2 – Injector Circuit

3 – Ignition

4 – Emission Control

5 – Vehicle Speed and Idle

6 – Computer and Output

7 – Transmission

8 – Transmission

9 – Reserved

0 – Reserved

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