The P0444 trouble code is linked to the Evaporative Emission Control System Purge Control Valve Circuit Open. It signifies an open circuit condition in the purge control valve circuit, which controls the flow of fuel vapors from the charcoal canister to the engine intake manifold.
Evaporative Emission Control System Purge Control Valve Circuit Open
Code symptoms P0444.
1. Illuminated “Check Engine” or “Service Engine Soon” light on the dashboard.
2. Strong fuel odor near the vehicle.
3. Rough engine idle or stalling.
4. Decreased fuel efficiency.
This code is common in brands such as:: Chevrolet, Renault, Ford, Toyota, Nissan, Mercedes Benz, Honda.
Causes of the code P0444.
1. Faulty purge control valve.
2. Open or damaged wiring in the purge control valve circuit.
3. Poor electrical connections in the circuit.
4. Faulty Engine Control Module (ECM).
Code Solutions P0444.
1. Test and, if necessary, replace the purge control valve.
2. Inspect the wiring in the purge control valve circuit for open or damaged sections and repair as needed.
3. Ensure proper electrical connections in the circuit and repair any loose or corroded connections.
4. If other potential causes are ruled out, consider diagnosing and possibly replacing the ECM.