The P0003 trouble code is associated with the Fuel Volume Regulator Control Circuit and indicates that the circuit’s voltage is lower than expected. This code is often found in vehicles with electronic fuel injection systems.
Fuel Volume Regulator Control Circuit Low
Code symptoms P0003.
1. Reduced fuel efficiency.
2. Poor engine performance.
3. Hard starting.
4. Illuminated “Check Engine” or “Service Engine Soon” light on the dashboard.
This code is common in brands such as:: Chevrolet, Renault, Ford, Toyota, Nissan, Mercedes Benz, Honda.
Causes of the code P0003.
1. A faulty or failing fuel volume regulator.
2. Damaged or corroded wiring or connectors within the control circuit.
3. A malfunctioning fuel pressure sensor.
4. Fuel system issues, such as leaks or clogs.
5. Problems with the Engine Control Module (ECM).
Code Solutions P0003.
1. Inspect and repair the fuel volume regulator and related wiring.
2. Test and, if necessary, replace the malfunctioning fuel pressure sensor.
3. Address and resolve any fuel system issues, such as leaks or clogs.
4. Use an OBD-II scanner to clear the trouble code from the vehicle’s memory.
5. If ECM issues are suspected, consult a qualified technician for diagnosis and potential reprogramming or replacement.