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Stuck - Please help P0743

1356 Views 2 Replies 1 Participant Last post by  cajflynn
My truck will only go in limp mode. Third gear only unless I manually shift 1-2-3. No overdrive. I get two codes - 1693 and 0743. The first time it went out I took the relay out and put it back in and it worked for 15 minutes. After trying this a few times it now has a code all of time and clearing the code does nothing once the car is truned back on. I checked the wires going into the transmission and the wires on the pcm. I also checked my lock up controller and I don't see any obvious wiring problems. I put a continuity tester on every connection on my lock up controller and there was not any continuity between the wires. I am now at a loss for how to diagnose this.
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Discussion Starter · #2 ·
When I checked the voltage at pin one on the transmission solenoid harness I got 12v. I think that means the solenoid is bad. Anyone know that for sure?
 

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Discussion Starter · #3 ·
bump - anyone?
 
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