OBD II Codes (P0000 - P0099) | P0001 “Fuel Volume Regulator Control Circuit / Open”

Meaning:

P0001 is the OBD-II generic code describing an issue with the circuit which runs from your engine computer (ECM) to your fuel pressure regulator on your fuel injection rail on your engine.
The ECM regulates your fuel pressure from your fuel pump going to your engine through this circuit. When the computer detects a fault in the circuit, it will set a Check Engine Light. The code will affect fuel economy and possibly damage the engine.

causes:

The fuel volume regulator 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 fuel pressure regulator.
Damaged fuel pump.
The ECM is damaged.

Symptoms:

The P0001 code will produce a Check Engine Light on the instrument panel/dash and will likely affect:

The engine’s performance during driving
Possible stalling
It may cause the exhaust to show smoke in various colors from black to white
Fuel economy will not be efficient

The P0001 fault code could cause your vehicle from running, you may experience:

Effect caused:

Prevent you from passing emissions
Inefficient fuel economy
Potentially damage your catalytic converters, which is an expensive repair
Fuel instability which may damage your engine

Diagnosis:

P0001 is properly diagnosed with a scan tool capable of sensor readings (not just one from an auto parts store). A qualified technician can read the data from the scan tool to determine when the problem occurred, or if it is still occurring. They may clear the code/light and test drive the vehicle while monitoring data to see if it returns.
Based upon the conditions of the testing, possibly clearing the code and performing a road test, further diagnosis may be required. Diagnosis may require multiple electrical tools such as:

Prevent you from passing emissions
Inefficient fuel economy
Potentially damage your catalytic converters, which is an expensive repair
Fuel instability which may damage your engine

Solution:

The most common potential repairs to address the P0001 code are as follows:

• Connect a professional scan tool. Verify the code exists.
• Check for any other faults. Clear the fault code to see if it returns.
• Analyze data from the ECM.
• Road test the vehicle.
• Check to see if the P0001 returns.
• Inspect all the items listed above. (wiring, leaks, etc.)
• Further diagnose the problem with the equipment listed above (scan tool, voltage meter). 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 or computer.
• Replace the component, wiring, or ECM (requires programming) which is faulty.