Weird check engine light issue after tune.

Hondata model coverage & ECU application questions.
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Tasaddar12
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Joined: Thu Jan 13, 2022 8:52 pm

Weird check engine light issue after tune.

Post by Tasaddar12 »

I have a 2020 civic EX with a K&N CAI. I put the base +3 tune on and I plan to have a dyno tune done with some additional parts installed late March or early April.

I was tuning the AFM for my CAI and my this is my first time tuning a car, but It seems pretty straight forward after looking at some guides provided by hondata and Google.

I did my 2nd tune to the AFM and my check engine light stayed on, and most my car features like ACC, Lane keep assist, Collision detection, etc all stopped working.

I went for a drive and after running the car to about 90 mph everything fixed itself except the check engine light.

Check engine light was resolved after I restart the car a few times.

I checked the diagnostics and the only errors were saying lost connection to network.

Any ideas?

It drives fine and runs a lot better after tuning the AFM.
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Re: Weird check engine light issue after tune.

Post by Hondata »

It it happens again use OBDII diagnostics -> diagnostics -> clear DTCs
Hondata
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