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If you load up the JB4 app and read the codes, it'll tell you what they mean. It'd be helpful to post the full description.
We're also going to need a full modification list - if you're entirely stock with a FMIC and a JB4 to do the tuning, why do you have "a tuner"?
Are you running a backend flash with your JB4 - and if so, which one and how was it flashed?
When you say 'your tuner' do you mean "the guy who installed the JB4 for me?"?
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