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Auto Trans doesn't upshift; help!!

3K views 2 replies 1 participant last post by  clanofwolves 
#1 ·
So my daughter's '04 Jetta SW 2.0 will not upshift and has the engine light on. After having it read by the local shop I have the following codes:
P0743 Torque Converter Clutch Circuit Electrical Malfunction
P0743 Torque Converter Clutch Circuit Electrical Malfunction
P0811 Excessive Clutch Slippage

So what to do? I read a lot about issues about the alleged poorly designed/manufactured stock "Auto Trans Valve Body" and how that seems to be a culprit of shifting issues above 150K. But, IDK...any help on here for a newbie to the VW Auto Trans world???

Dave
 
#2 ·
So I've learned from Google that the common Problems That Trigger the P0743 Code are:

Defective Torque Converter Lockup Solenoid
Defective Engine Coolant Temperature Sensor
Defective Torque Converter Clutch
Defective Valve Body
Dirty transmission fluid that restricts the hydraulic passages

So what's the best way to narrow this field??
 
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