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International Automotive Technicians Network
Re: F150 3.5L Catalyst Failures
Posted to Technical Discussion Forum on 1/12/2024

If you look at mode 6 you will see in the [...] good and [...] side is not the same. One is lower than the other. Look at the pass fail number and look where your number is.

One converter may keep the light out on one side, for a bit longer than the other. B... Login to read more.