Tranny problems with codes
 

Ok so yesterday my check engine light came on. Went to auto zone and had them check the code. Its throwing two codes. P0700 and P0743.

P0700 - Transaxle control system fault

P0743 - Torque converter clutch solenoid circuit

What are these? Anyone else ever had problems with these? After the light came on the jeep wouldent shift into 5th gear or OD. Is there something wrong with the tranny or whats the problem. Anyone help me out here. 4.0 engine, AW4 tranny, 231 t-case on a 98 sport

The P0700 is kind of a generic code for a transmission problem.

Focus on the P0743.Which is most likely a faulty solenoid. Dirty transmission fluid "could" cause it (how is yours??), but if fluid is relatively fresh, I'd suspect the solenoid itself.

You'll need to drop the transmission pan to access it. The solenoids can be tested for resistance, which I think should be in the 13-14 ohm range.

Search for P0743 + Jeep Cherokee and you should find more information on this.....

Well in the 4 years I have owned the jeep I have never changed the fluid. So Im sure it has close to 80k on it. So Ill try that first. Ill change the fluid and put a new filter in and see if it changes anything