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Re: F150 3.5L Catalyst Failures
Posted to Technical Discussion Forum on 1/10/2024 4 Replies

Mode 6 will give you the good and the bad on the converter.

Just make sure nothing is an outside cause. Cat is not up to the job most of the time. A few engine running problems and exhaust leaks can set the code. But on a 16 I would not install aftermarket. ... Login to read more.

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