21A026 code thrown.

[Evilpenguinking]

21A026 code is being thrown at me. (Combustion engine: abnormal key/MSA start detected) 2021 3.0 mods are bm3 OTS flex fuel tune, catless downpipe, Xhp stage 3 transmission tune. I’ve seen the code brought up on the forums here but not talked about directly. Anyone have some insight on what it may be? I’ve cleared the code before, only to come back after a few days.

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[zrk]

That appears to be a real actual dealer problem. Likely not related to your tune.

Something with Auto Start/Stop.

 

[SooopraSD]

Old thread, but did you figure this out?

 

[djf]

If @zrk is right that it’s related to auto start/stop, just code it out and see if it reoccurs.

 

[Evilpenguinking]

Old thread, but did you figure this out?

Not directly no, but I never got the code back after getting a CustomRom tune.

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