I took My truck to autozone and they read these codes.

P0138- 02 Sensor circuit high voltage bank 1 sensor 2

P0783- 3-4 Shift malfunction

P0740- tourque converter circuit malfuction

what do these mean and what can I do???
any help would be appriciated

 

Ck with the dealer and find out if you still have powertrain warranty? The transmission maybe covered under the powertrain.

 

The P0138 code refers to the oxygen sensor that is on the driver's side after the cat.

Bank 1 means driver side, bank 2 means passenger side. Sensor 1 is before the cat, sensor 2 is after.

You probably need an oxygen sensor...

 

agree with the above posts. it seems that you have to replace your dodge oxygen sensor with a new one. A friend of mine had been in the same situation before, replacing the 02 sensor solved his problem