P0004 Code: Meaning, Causes, and Symptoms | OBD2 Codes

P0004 – Fuel Volume Regulator Control Circuit High

 

P0004 Possible Symptoms

 

Engine Light ON (or Service Engine Soon Warning Light)

 

P0004 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

 

P0004 Description

 

The Powertrain Control Module (PCM) monitors the Fuel Volume Regulator (FVR) and Fuel Volume Regulator Return (FVRRTN) circuits to the PCM for high and low voltage.