A1218 Posted October 16, 2021 Share Posted October 16, 2021 I got a U0155 code as soon as I plugged in my code reader to the vehicle.Coincidentally I installed the VCM tuner 2 earlier in the day after the vehicle sat for a few hours. I drove a few times after and there were no codes. I decided to check some live data out to see if the tuner was actually working, but as soon as I plugged it into the port the dash lit up with all the warning lights and check engine light. I cleared the codes and went on the road again after, nothing so far.Is there a specific sequence or way the scanner should be used? I plugged it in with the engine already on and it triggered instantly.I tried it back just now this time plugging the scanner in first then starting the engine and everything was okay.I did reach out to the tuner company and they said this situation is not a result of the VCM tuner.I honestly never used the code reader on the vehicle yet so I would like to know if I’m doing something incorrectly? Quote Link to comment Share on other sites More sharing options...
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