P0451
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Joined: Jun 2020
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P0451
I have no Idea where to start to fix this. When I went to the parts store they said they did not have this sensor. I guess they looked for a Evap Sensor.
Truck is a 2010 5,4l with 205K, I just bought this truck, and this light was was on when I bought it. I'm new to Ford so any help will be greatly appreciated.
Truck is a 2010 5,4l with 205K, I just bought this truck, and this light was was on when I bought it. I'm new to Ford so any help will be greatly appreciated.
Laughing Gas
Joined: Dec 2010
Posts: 1,200
Likes: 45
From: Timbuk3, MI
Google [ 2010 ford f150 dtc p0451] .....Possible causes ...
.
- A defect in, or damage to, the gas tank
- A problem with the fuel tank sending unit
- A faulty fuel tank pressure sensor
- An open or shorted fuel tank pressure sensor circuit
- A faulty canister vent valve (somewhat rare)
- A faulty PCM (rare)
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The most common mistake associated with a P0451 code is failing to properly inspect all components, wiring, and connectors before replacing any part of the evaporative emission control system. For example, in some cases, a vacuum leak could be due to a loose or damaged fuel cap, not a faulty vacuum hose.
More Turbo
Joined: Feb 2003
Posts: 532
Likes: 0
From: Grand Rapids, MI
I am under the impression (from Fordtechmakuloco on youtube) that the most common cause of this and other evap codes is a bad evap purge valve (the one on or near the intake manifold). Unfortunately, not the case for me and I'm trying to figure out a goo way to DIY troubleshoot the rest of the system without shotgunning components.
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