Pesky Check Engine Light
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Joined: Jul 2021
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Pesky Check Engine Light
Hello. I am new to this site but I am dealing with an issue that's common with these 2004 Ford trucks. My truck has a 5.4 engine. The check engine light popped on a couple of years ago. So I went and did a fuel injection flush and cleaning and the light went away...emission passed. Then the light popped up again. Got new spark plugs and coils done. Light off. Problem solved. Then...got a diagnostics done, couldn't find anything wrong. So got a scan tool, the code was P2272 BANK 2 DOWNSTREAM STUCK LEAN. So now Im thinking exhaust leak. Replaced the one bank 2 o2 sensor with a Bosch one, failed emissions. So now I'm thinking and was recommended that ALL 4 sensors be replaced with Motorcraft. So if anyone had the same issue but got the answer to the check engine light problem, I would be greatly appreciative, and many thanks and blessings to you
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Joined: Dec 2006
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From: Joplin MO
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Joined: Oct 2002
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From: St. Louis (Out in the woods)
So now I'm thinking and was recommended that ALL 4 sensors be replaced with Motorcraft.
Swap the two downstream sensors and see if the fault moves to bank 1 or stays with bank 2. If it stays, check for wiring harness problems or exhaust leaks.
Last edited by projectSHO89; Jul 11, 2021 at 08:09 AM.