P0001 Code - Fuel Volume Regulator Control Circuit/Open

What Does Code P0001 Mean

This diagnostic trouble code (DTC) is a generic powertrain code, which means that is applies to OBD-II equipped vehicles, including but not limited to Ford, Dodge, Vauxhall, VW, Mazda, etc. Although generic, the specific repair steps may vary depending on make/model. A P0001 is not a very common trouble code and is more often seen on common rail diesel (CRD) and/or diesel engine, and gasoline direct injection (GDI) equipped vehicles.

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Possible symptoms

• 
  
  
  • Engine Light ON (or Service Engine Soon Warning Light)

Possible causes

• Faulty Fuel Volume Regulator (FVR) Control Solenoid
• Fuel Volume Regulator (FVR) Solenoid harness is open or shorted
• Fuel Volume Regulator (FVR) Solenoid circuit poor electrical connection

How To Fix It

Some of the most common fixes for this error code includes:

• Analyzing the data from the ECM
• Inspecting all items such as wiring and leaks, etc.
• Replacing the trouble component, such as wiring

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Additional comments for consideration regarding the P0001 code

Any sensor issue may occur all the time or intermittently. Some fault codes may require more time to diagnose. With this particular code, the solution could be simple or require extensive time to diagnose and repair. Depending on your vehicle, it may take several hours to determine the root cause and repair.

I have experienced this code in the past mostly on Ford vehicles. After using a scan tool and monitoring the voltage, I could determine if the fuel pressure regulator, wiring, ECM, or fuel pump is at fault. With the scan tool connected I typically evaluate the data while checking the fuel pressure and using a voltage meter to ensure all the values match. If the values do not match, then a further diagnosis is required.

The sensor may be the cause, wiring issues might be burning/rubbing on another engine component from previous repairs, rodents like to chew wires, or you may have a bad ECM. A scan tool inspection is required. Then we will determine where the fault lies. We could clear the fault code/light first, then verify if the Check Engine Light returns, and go from there. It may have been a weird occurrence from bad gas or weather, or a permanent problem.

Vehicles with high mileage (over 80,000 miles) may just need a regulator. But replacing parts based upon a code is not recommended.

P0001 - Generic

Type Powertrain - Fuel and Air Metering - ISO/SAE Controlled
Description - Fuel Volume Regulator Control Circuit/Open