The P0445 trouble code is associated with the Evaporative Emission Control System Purge Control Valve Circuit Shorted. It indicates a short 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 Shorted
Code symptoms P0445.
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 P0445.
1. Shorted purge control valve.
2. Short circuit in the wiring of the purge control valve circuit.
3. Poor electrical connections leading to a short.
4. Faulty Engine Control Module (ECM).
Code Solutions P0445.
1. Test and, if necessary, replace the purge control valve.
2. Inspect the wiring in the purge control valve circuit for shorted sections and repair as needed.
3. Ensure proper electrical connections in the circuit and repair any loose or corroded connections that could cause a short.
4. If other potential causes are ruled out, consider diagnosing and possibly replacing the ECM.