Alright, last night my CEL lit up so today I took my car to Auto Zone to check it (hate counting flashes...). Well he checked the light and 2 codes came up. One was for the cat (i know why that came on, but shhhhh.) but the other said something really strange, i dont remember what it said exactly b/c it made no sence... but the code he told me was P0600 or PO600.
Does anyone know what that means?

 

P0600 --- 0504, Automatic Transmission Control Unit Signal to ECU.

0504

Diagnostic Trouble Code 0504 points to a problem with the Automatic Transmission Communications line. Pulse signals are exchanged between the Engine Control Module and the Transmission Control Module to assure smooth shifting during hard acceleration or deceleration.

This malfunction is detected when the ECM continuously receives an incorrect voltage from the TCM. Possible causes include...
- Harness or connectors (The communications line circuit between the ECM and the TCM is open or shorted.)
- TCM
- Discharged or faulty battery


The stickies are your friend.

 

damn, thanks, looked in the last ECU sticky i know that it had the scanner codes, thanks anyway!

EDIT: by the way, would that have anything to do with the DR mod? also, if i didnt use the DR mod what else could be the problem?

 

I don't have an auto so I never paid too much attention to the DR-mod, but I think I have heard of it throwing some sort of code, so that could very well be it. Reset the ECU and stop using the DR and see if it comes back. Then save up for the VB to get the same results as the DR, but it will be beneficial to your tranny rather than detrimental.