P0002 OBD-II Trouble Code Fuel Volume Regulator Control Circuit Range/Performance

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           1                 P0002 OBD-II Trouble Code Fuel Volume Regulator Control Circuit Range/Performance P0002 trouble code definition

The P0002 code is associated with the electrical circuit which connects to your fuel pressure regulator. It also may be related to other codes, such as: P0001, P0003, or P0004.

What the P0002 code means

P0002 is a generic OBD-II code indicating an issue with the engine control module (ECM) reading signals from your fuel pressure regulator on your fuel injection rail mounted to your engine. The ECM regulates your fuel pressure from your fuel pump going to your engine through this circuit and receives input on your actual fuel pressure. When the computer detects a pressure it is not commanding to the fuel pump, it will set a Check Engine Light. The code will affect fuel economy and possibly damage the engine. On a side note, this code is rare.

What causes the P0002 code?

The fuel volume regulator range/performance code may have several causes: Disconnected plug to the fuel regulator Possible corrosion in the sensor connector Damage to the sensor wiring to the ECM Leaking or defective fuel pressure regulator Damaged fuel pump The ECM is damaged

What are the symptoms of the P0002 code?

The P0002 code will produce a Check Engine Light on the instrument panel/dash and will likely affect: Your engine performance during driving Possible stalling while driving It may cause the exhaust to show black or white smoke Fuel economy will be affected Damage to the catalytic converter in your exhaust

How does a mechanic diagnose the P0002 code?

P0002 is properly diagnosed with an advanced scan tool capable of factory sensor readings A qualified Electrician/Mechanic can read the data from the advanced scan tool to determine when the problem occurred, They may clear the code/light and test drive the vehicle while monitoring the scan tool data to see if the fault returns or is present. Based upon the conditions of the test, possibly clearing the code, and road testing the car while monitoring the data, further diagnosis may be required. Diagnosis may require multiple tools such as: An advanced scan tool to read the ECM data values A digital voltage meter with attachments A fuel pressure tester

  How serious is the P0002 code?

The P0002 fault code could cause your vehicle from running and will: Affect fuel economy Cause fuel instability which may cause damage to your engine Potentially damage your catalytic converters Prevent your vehicle from passing emissions A qualified Electrician/Mechanic can diagnose the problem with proper tools to verify these potential issues.

What repairs can fix the P0002 code?

The most common procedure to repair the P0002 code are as follows: Connect a professional scan tool. Verify the code exists.Check for any other fault codes. Clear the fault codes to see which codes return.Analyze scan tool data from the ECM. Road test the vehicle while analyzing the scan tool data from the ECM. Check to see if the P0002 code returns.Inspect all of the items listed above. (wiring, leaks, pressures, voltages, etc)Further diagnose the problem with the equipment listed above if the problem appears to be present. The signals from the sensor need to be analyzed to determine where the problem exists. If the signals are fine, then we need to move towards the wiring, computer, or fuel system.                                                                                                                                    

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