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What does the P0451 code mean on a Ford F150?
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The P0451 code on your Ford F-150 is connected to the emissions system and could indicate a malfunctioning pressure sensor. This code is not specific to Ford vehicles and is universal among various car makes. If your truck's "check engine" light comes on and you detect a gas smell, along with a possible drop in fuel efficiency, it could be due to a loose gas cap or faulty wiring in the EVAP canister area. Check the wiring connections at the EVAP pressure sensor for any issues. It may be necessary to replace either the EVAP canister or the sensor itself. Another potential cause is a malfunctioning fuel tank pressure relief valve, with replacement costs typically ranging from $250 to $350 for parts and labor.
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The Ford F-150 trouble code P0451 signals that the powertrain control module (PCM) has identified an issue with the pressure sensor circuit in the evaporative emissions (EVAP) system.
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