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P0451 pressure switch

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Ok the fuel pressure sensor is located on the top of the fuel tank now before you change that make sure there is no kink in any hoses

Posted on Jun 26, 2014

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Posted on Jan 02, 2017

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SOURCE: Code P0451 Explanation

the fuel tank pressure sensor may be the problem. but first check that gas cap is tight and the seal is good on cap. auto parts store will tell you the location of the sensor,or call dealer to find out.

Posted on Apr 11, 2014

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I was pumping gas and car stops running and didn't want to start check engine light is on i took to auto zone got code p0451 what's going on 2011 lacrosse


Possible causes are these so you need to get the vehicle top a competent mechanic to locate the cause in your case.............
- Faulty Evaporative Emission System Pressure Sensor
- Evaporative Emission System Pressure sensor harness is open or shorted
- Evaporative Emission System Pressure sensor circuit has a poor electrical connection
- Faulty Engine Control Module (ECM)

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Code P0451 Explanation


the fuel tank pressure sensor may be the problem. but first check that gas cap is tight and the seal is good on cap. auto parts store will tell you the location of the sensor,or call dealer to find out.

Apr 11, 2014 | 2005 Ford Mustang

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What to do with code P0451


fuel cap, evap canister and its related sensors, vacuum leaks

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Code P0451 Can you please tell me how can fix the problem


P0451 Fuel Tank Pressure Sensor Range/Performance. You can try a gas treatment and the code may clear in a day or two. Hope this helps Tim

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1 Answer

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