Just bought a 97 a4 1.8t. Allready have problems p1613...

[IS300geT]

Mainly the auto tranny feels awkward when it shifts. It just shifts at wierd rpms sometimes upshifting too soon. It shifts smooth, but definitely doesnt seem right. So I find it has 1 code. P1613. I am assuming this has somthing to do twith the tranny. It say it a MIL fault B+. I dont even know where to begin with this. Nobody seems to have a solid aswer as to how to fix this. Some people say to possibly replace the TCM?

Other than that the car is great, runs quiet and engine is smooth. the car has 127,00 miles. Last service was recorded at 90K. A new cylinder head was installed along with all fluids and whatnot at the dealership. Ima try to make some time tomorrow to get under the car and check all connections at tranny Please help me out if possible, thanks

[docurley]

From what I can find out it may be one of two things and the fitst option may be your:

Throttle body servo may be dead or need resetting.

The second option would be if you had a new ECU fitted and needs recoding but I would say that that was a red hearing.

[solorider]

are you sure it is code P1613? the P codes are EOBD and only go to P0999,if the code was P0613 then that would indicate "transmisson control module TCM processor error"