Join Date: Feb 2010
Drives: 2004 Optima 2.4 EX, 2005 Yamaha R1 (street) 2001 GSXR 1000 (track)
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Welcome to the forum. The two codes you have are:
P0763-Shift Solenoid C circuit malfunction
P0604-TCM RAM error
Check out the website listed in my signature line for a full description on both codes, as well as diagnostic steps. P0604 looks like a bad trans control module (internal fault). The P0763 could be wiring, the shift solenoid, of faulty TCM. I'm willing to bet the P0763 is related to the TCM. Usually anytime a control module sets a code for an internal fault, it's toast. I would start here (perhaps a used unit from a salvage yard vehicle or an online source.
- Please fill in your profile info in the "user CP" link (year, make, model, location, etc..), it makes it easier for us to help you.
Go to www.kiatechinfo.com
and register for free for service information.