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Chevy code P0451 - 2009 Chevrolet Traverse

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Code reads emission evaporative pressure sensor switch - how do I fix it?

Replace the switch, or try bypassing it by shorting the 2 terminals together to see if the system will then start up.

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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.

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Chevy traverse ltz code p0451

That code is for the Fuel Tank Pressure Sensor. It's safe to drive, but you definitely want to get it fixed sooner than later.

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Engine codes p0642 and p0451

P0451 Evaporative Emission Control System Pressure Sensor Range/Performance

P0642 Engine Control Module (ECM) Knock Control -Defective
i think the most likely cause is the anti knock sensor ,this is mainly fitted to american models rather than europeon models owing to the europeon parliament disallowing the high level of biological produced fuel used in america,the answer o this i think is to see the post i have added to this questions answer.

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Codes po475and po541

this is the code table
hope it can help you and good luck

Nov 17, 2012 | Cars & Trucks

1 Answer

Trouble starting error code is p0451

P0451 - Evaporative Emission Control System Sensor

This sensor is used to test that there are no leaks in the EVAP system. This is usually a result of a failed sensor, but considering your starting trouble, you most likely have a leak in your EVAP system which is allowing extra air into your intake.

Attach a vacuum gauge to intake manifold vacuum and start the engine. You should see 19-21 inches of vacuum at idle. If it's significantly lower than this, try unhooking the evap line from the intake and covering the intake port with a vacuum cap. If the vacuum comes up, then you have a leak a leak in the EVAP system you will need to find and fix.

Hope this was helpful.

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Wont start code 83

There is no code 83 for a 1999 Suzuki Grand Vitara, according to Alldata. Most all codes are displayed as 5 digits (eg. P0121, P0451, P0130 etc....). Recheck your code, maybe you are mistaken.

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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

Apr 17, 2011 | 2006 Pontiac Torrent

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Codes P0303, P0451,P0440- gas cap replaced 2X check engine light

PO303 # 3 cylinder miss fire: check ign coil and wires,
PO440: looks like perhaps something to do with the fuel line change! i would look further into it before traveling far perhaps a really well reputed garage can help?????

Jan 24, 2009 | 2000 Kia Sportage

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