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engine trouble codes 01 Yukon
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rrman111
Anonymous Poster
rrman111@prodigy.net
Dec 7, 2008, 6:01 PM
Post #1 of 2
(1401 views)
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engine trouble codes 01 Yukon
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01 Yukon has touble codes p0440 and p1404 do I have to remove the intake manifold to fix the egr problem? I have already cleaned out the carbon canister and the filter located by the rear of the gas tank
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dmac0923
Enthusiast
Dec 8, 2008, 9:08 AM
Post #2 of 2
(1390 views)
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Re: engine trouble codes 01 Yukon
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P-0440
This code means that the evap system has detected a large leak. The evap system puts a vacuum on your gas tank and then sees how long it will hold it. If it looses vacuum too quickly, or can not achieve the desired vacuum level, it will set this code. Many times this code is set from either filling up with gas while your engine is running or not having the gas cap on tight. I can tell you that the most common things that go bad and set this code, are the evap vent solenoid, and the evap purge solenoid. If I an be of more help, let me know.
P-1404 Exhaust Gas Recirculation (EGR) Closed Position Performance
With these codes it's pretty common to see some small pieces of carbon stuck in the egr pintle holding it open. I'd pull the egr valve off and check for this. I won't tell you to replace it but If it was mine and I didn't find anything in it I'd replace it.
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2015 Jeep Grand Cherokee
2002 Ford Ranger
2004 Toyota Corolla
1969 Ford Mustang Mach 1
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