"check engine" light code 23 - Page 2 - Honda Foreman Forums : Rubicon, Rincon, Rancher and Recon Forum
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post #11 of 17 (permalink) Old 11-28-2018, 10:05 PM
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Thanks @toodeep my 2017 Honda rancher 420 FM1 was doing the same code 23 and I was looking on other forums and I came on here to be sure because I saw it say it was the shift angle sensor but I don’t have that because mine is a foot shift but I’m gonna get an O2 sensor delete because I just got a snorkel and I don’t want my four wheeler to cut off under water and I asked the dealership and they said you don’t need the O2 sensor
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post #12 of 17 (permalink) Old 12-01-2018, 12:39 PM
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Just bought a new Rubicon 500 2018
This was madding when not even had time to put even a mile on it
Today called dealer and they came picked up and now has returned same day
come to find out the O2 sensor gone
Was told where its been cold here that starting up shutting off often will cause this to happen
They said machine must idle for a few minutes
But the funny this is I always make the machine run for awhile before even moving it
O well they were prompt I must say that
Well this was the case for me anyways
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post #13 of 17 (permalink) Old 12-03-2018, 02:05 PM
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Garage
Don Oglesby sells an 02 delete. Not sure if it will make your machine throw a code.


This is why I'll stick to my air-cooled, carb'd Foremans.

2009 Foreman 500FM Green
27" Execs on Rubicon rims, Perfex
Heated grips and Thumb , HID's
5K Viper Max winch

2009 Foreman 500FM Green
Perfex with HL springs
27" Mudbugs on Rubicon rims
Heated Grips and Thumb, HID's
4K Viper Max winch

2006 Foreman 500FM Green
28" Mugbugs, stretched, Perfex, HLsprings
3K Superwinch winch

2009 475 Rancher AT Tan
26" Mudbugs on Rincon rims
Warn winch. Foreman pod light with HID, SRA gear reduction
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post #14 of 17 (permalink) Old 12-07-2018, 05:01 PM
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Location: Spruce Grove, Alberta, Canada
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I can confirm that this is the O2 sensor. I had the same issue on My 500 and my 420. Both 02 sensors bugged at the same time. It was very strange. Just disconnect the battery for 10 min, turn the key while the battery is disconnected to drain all capacitor charges, and then install new O2 sensor while battery is disconnected. This fixed the "code 23 light blink"
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post #15 of 17 (permalink) Old 12-16-2018, 10:15 AM
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I agree air cooled cards are much easier
New models with FI
Star easier but I also prefer air cooled carbs
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post #16 of 17 (permalink) Old 12-16-2018, 10:18 AM
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Joe you mention you replaced o2
I’m a newbie on the newer rubicon’s
Where is the o2 sensor on these machines 2018 rubicon
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post #17 of 17 (permalink) Old 12-16-2018, 12:26 PM
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O2 sensor is just over the left tire on the top of the exaust
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