96 LHS stuck in limp mode

[MrCoffee35]

I have a 96 LHS, the car is not stuck in limp mode ( 2nd gear )

I tried a ODBII scanner from the dealer and we where not able to communicate with the computer and it shows 55 if we turn the key 3 time.

So I started to check all the wires one by one for any broken wires and found notting..... I got my self a OBDII scanner and tried again and voila I got this error that pop out that the TCM ( Tranny computer is not reponding ) I look and oups I forgot to connect back the module, after putting back the computer I reconnect the battery and again not able to communicate with the computer again

Looks like there is someting that is shorting the communication bus or there is someting open somewhere any idea what would cause this problem ??????

[MrCoffee35]

found one problem, there was a 12 volt missing in the transmission control relay pin 30, now the tranny works fine but I still have this communication problem with the ODBII scanner.

If I remove the tcm I am able to talk and get codes in the PCM.

[Ben M]

I had the EXACT problem....95 LHS.....limp mode at 40 mph. Dealer replaced the trans module and solenoid..part numbers....4539766....solenoid 080590 and the module...R4797708AA module 08035028.
Damage...$620.32 including labor.

[shorty21becky]

[quote=MrCoffee35]I have the same problem with my 94 new trans,t.c.m, still not working i can communicate thru a modis scanner and tells me 2-4 selenoid error where did you fin that wire

[twistedtech]

[quote=shorty21becky]

Originally Posted by MrCoffee35

I have the same problem with my 94 new trans,t.c.m, still not working i can communicate thru a modis scanner and tells me 2-4 selenoid error where did you fin that wire

Should have started your own thread but we are here now,first thing I would be doing is hard wiring the two plugs by the right strut tower that run down to the trans.