2018 F150 CEL because of long tube headers

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David1089
Posts: 2
Joined: Tue Dec 03, 2019 6:31 pm
Vehicle: F150, 5.0, stock/slightlymodified,2018

2018 F150 CEL because of long tube headers

Post by David1089 » Wed Dec 04, 2019 1:49 pm

My question is, is there a way for me to simply have the truck ignore the threshold sensor for the o2 sensors. I know it’s illegal to recode to say it’s fine. But is there just a way to keep the light off? I’ve had the truck retuned and told it wouldn’t come in but they failed me. I’ve researched it and all it is, is the pressure between the upstream and down stream aren’t correct because it’s high flow cats and 3” pipe now

bpan
Posts: 7
Joined: Tue Jun 16, 2015 5:50 pm
Vehicle: 2010 Ford F250 6.4 Diesel - 560WHP

Re: 2018 F150 CEL because of long tube headers

Post by bpan » Thu Dec 05, 2019 4:03 pm

I don't know if this will work in your exact scenario or not, but I had a 2005 Expedition with a 5.4L that constantly burnt out the cats and threw a code. Finally I went to NAPA and bought O2 sensor extensions. They pull the O2 sensor out of the direct line of exhaust, which tricks them into thinking they have more oxygen than they do. I would suggest starting this process with the O2 sensors that would have been reading after the cats. That way they think that the cats are still there.

David1089
Posts: 2
Joined: Tue Dec 03, 2019 6:31 pm
Vehicle: F150, 5.0, stock/slightlymodified,2018

Re: 2018 F150 CEL because of long tube headers

Post by David1089 » Thu Dec 05, 2019 6:31 pm

I’ll try that, I’ve done little research on them but it’s worth a shot! Thanks

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