P0003 Engine Trouble Code

Meaning of P0003 engine trouble code is a kind of powertrain trouble code and theoretically you can drive for a few weeks or even months with a broken MAF sensor. You will notice a decrease in gas mileage and over time the car will eventually start stalling a lot. At a shop, the replacement cost is between $240-$400 depending on the car, but that's usually the cost of parts because the labor is relatively simple.

P0003 Engine Trouble Code
P0003 Engine Trouble Code
P0003 Engine Trouble Code
P0003 Engine Trouble Code
P
0
0
0
3
OBD-II Diagnostic Powertrain (P) Trouble Code For Engine Intake Valve Control Solenoid Circuit Low Ambient Air Temperature Sensor Circuit Low Cold Start Injector 1 Malfunction Exhaust Gas Recirculation Sensor B Circuit High

 

P0003 Fault Symptoms :

 
  • Check engine light comes on
  • Engine stalling or misfiring
  • Engine performance issues
  • Car not starting

P0003 Possible Causes

  1. Faulty Fuel Volume Regulator (FVR) Control Solenoid
  2. Fuel Volume Regulator (FVR) Solenoid harness is open or shorted
  3. Fuel Volume Regulator (FVR) Solenoid circuit poor electrical connection

Possible Solutions

First, check for known Technical Service Bulletins (TSBs) for your year/make/model. If there is a known TSB that addresses this issue, it can save you time & money during diagnosis. Next, you'll want to visually inspect the wiring and connectors pertaining to the fuel volume regulator circuit and system. Look for obvious breaks in the wires, corrosion, etc. Repair as necessary. The fuel volume regulator (FVR) is a two-wire device with the wires both going back to the PCM. You should not apply direct battery voltage to the wires or you could damage the system. Refer to a factory service manual for more specific troubleshooting steps for your year/make/model/engine.