my 2006 dodge charger rt has codes U0155 and U0020, battery and alternator are good, but transmission is revving high some times and car runs awful, has no tcm codes? someone said it could be a transmission problem, but that makes no sense because i have no codes for that, what could be the problem, transmission seems to suffered the most, it shifts rough, and when I move the park to drive it wont make that little thump its supposed to make
my 2006 dodge charger rt has codes U0155 and U0020
You can find detailed troubleshooting information for those codes in the repair manual linked below:
https://lemon-manuals.la/Dodge%20and%20Ram/2006/
(Those are CAN bus communication codes.)
someone said it could be a transmission problem, but that makes no sense because i have no codes for that
Who said that? However not every possible transmission problem will trigger a code.
That car is 20 years old so it would be no surprise if the transmission was wearing out. (You did not mention mileage.) Has the transmission been properly serviced over the last two decades?
@chucktobias the car has 53k original miles and has mainly been garage kept, I had transmission fluid drained and filled 3 thousand miles ago like 2 months ago, they didn't add the eom fluid and mixed the fluids. when they changed fluid the techs said it had no metal shavings or problems, I don't think transmission would go out from approved transmission fluids mixing?
Mixing fluids certainly wouldn't help. What you likely need is a transmission expert to perform bidirectional testing of transmission components as well as monitoring its data stream during operation.
my 2006 dodge charger rt has codes U0155 and U0020
You need to find out which modules reported the trouble codes.
