My ECM recently failed. One of the symptoms was bad shifting. I replaced it with a new (used) ECM. All the dash lights went out and the car once again shifted and idled properly.
However, a short time later the check engine light came on. The codes are P1111, a pointless code as far as I'm concerned. If everything is ok, why have a code?
The other code is P0741. However, the transmission appears to be shifting normally both in standard and sport modes. Also, the J-gate shifter works properly. So, I erased the codes but they popped up again a short time later.

So, any opinions on what might be going on here? Perhaps the fault code is in the new ECM??

 

There will ALWAYS be one of the following codes:

P1000: on-board diagnostic tests have not been completed since last memory clear
P1111: all on-board diagnostic tests have been completed

They are a status and not an error.

P0741 indicates Torque Convertor clutch stuck OFF. here are the possible causes:



Graham