Possible causes

– Loose or missing gas cap
– Faulty gas cap
– Canister Vent Solenoid harness is open or shorted
– Canister Vent Solenoid electrical circuit poor connection
– Faulty Canister Vent Solenoid

When is the code detected?

The code indicates that an EVAP system leak has been detected.

Symptoms

– Engine Light ON (or Service Engine Soon Warning Light)

P1451 FORD Description

The Engine Control Module (ECM) detected the canister vent solenoid signal moved outside the calibrated parameters at a specific duty cycle.