o2 sensor bypass
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Trial User
Joined: Jan 2018
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o2 sensor bypass
Okay so I have a 2001 honda civic ex that I want to take the catalytic converter out and straight pipe it. But I don't want the damned CEL flashing at me. Any way I can take the cat out without the CEL turning on? Thank you in advance
Honda-Tech Member
Joined: Oct 2004
Posts: 109
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From: Seattle, WA, USA
Re: o2 sensor bypass
If you live in the united states that is illegal and a federal offense, and state offense in at least 45 states.
https://www.epa.gov/sites/production...hsysrepair.pdf
See question 1.
Otherwise, devices exist that you can buy that plug into sensor plugs and trick the ECU. Happy googling.
https://www.epa.gov/sites/production...hsysrepair.pdf
See question 1.
Otherwise, devices exist that you can buy that plug into sensor plugs and trick the ECU. Happy googling.
Last edited by utn; Jan 18, 2018 at 06:59 PM.
Hysterically Calm
Joined: Jan 2013
Posts: 10,439
Likes: 597
Re: o2 sensor bypass
You get a defouler for the 2nd o2 sensor. If space is restrictive they have L (90 degree bend) defoulers.
It keeps the o2 sensor but puts some space so t reads different than the primary and prevents the code from appearing.
Code appears when the two O2 sensors come back with near like readings.
It keeps the o2 sensor but puts some space so t reads different than the primary and prevents the code from appearing.
Code appears when the two O2 sensors come back with near like readings.
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drinksprite
Honda Accord (1990 - 2002)
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Sep 14, 2018 12:00 PM