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B48 JB4 Error Codes

jnoremac

Well-Known Member
First Name
Cameron
Joined
Oct 28, 2024
Threads
9
Messages
48
Reaction score
41
Location
Rhode Island
Car(s)
2021 Toyota Supra 2.0L
Hi all! I just installed a JB4 on my 2021 MKV 2.0L and I got the following error codes:
CD990E
CD990B
21B056
21B055
030DA8
For reference, I was driving on map 2 on 93 octane fuel and the only part that’s aftermarket is the intake, which I installed a Takeda cold air intake. Are these codes causes of concerns or standard? I found a few things online but I found the answers a little confusing. Sorry if I don’t sound like I know what I’m talking about, I’m currently also learning more about cars as I want to be the best owner for this Supra!
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