OBD-II Trouble Code P0002 is a generic code that indicates an issue with the fuel volume regulator

OBD-II Trouble Code P0002 is a generic code that indicates an issue with the fuel volume regulator control circuit range or performance. This code is also commonly found in vehicles with diesel engines, but it can occur in gasoline-powered vehicles as well.

The fuel volume regulator controls the amount of fuel that is delivered to the engine. When the engine control module (ECM) detects that the fuel volume regulator control circuit is not operating within the expected range or performance parameters, it will trigger the P0002 code and turn on the check engine light.

The possible causes of the P0002 code include a faulty fuel volume regulator, a problem with the fuel volume regulator control circuit wiring, a malfunctioning fuel pressure sensor, a clogged fuel filter, or a failed ECM.

To diagnose and repair the issue causing the P0002 code, a mechanic will typically use a scan tool to read the codes stored in the ECM and perform diagnostic tests on the fuel system components. Depending on the cause of the problem, the mechanic may need to replace the fuel volume regulator, repair or replace damaged wiring, replace the fuel pressure sensor, replace the fuel filter, or replace the ECM.