I have a 2001 Civic LX. About 3 weeks ago, the CEL came on with a single P0704 Code. I read several posts etc. and bought enough ATF from Honda to to two fluid changes.

Two weeks ago, I replaced the fluid. I found no metal in the fluid or on the drain plug magnet. I drove the car about 75 miles per day for a two weeks with no CEL. Then, yesterday it came on again. This time the code was P0740.

Since I had fluid, I changed it again as I read it may take 2-3 drain and fills to clean the TCC valve. Also, once again, no metal and the drain plug was clean.

I have no other symptoms. The car drives and shifts normally (so far as I can tell).

Has anyone had this issue (meaning code P0704 followed by P0740) and does this mean the tranny is dying?

The P704 seemed to point to a sticking TCC valve. Has anyone ever pulled and cleaned one of these successfully?

Would appreciate any help.

 

Wow! Nobody on this forum works on their own cars?

 

We work on our own cars... but many of us do not own automatics. Most Civic enthusiasts don't.

 

Gotcha . I guess I am in the "keeping the car running safely for a 16 year old girl" camp rather than the enthusiast camp.

I wish she would learn to drive a manual but one thing at a time.

 

Yeah, I wish I could help, but I am afraid I don't even know what a TCC valve is due to my lack of automatic transmission knowledge. I know the basics, but that's all.