[trophy956]

thsi code is a PIA ,its just a signal between the ecu and tcu ,giving a specific voltage to the tcu ,check for loose plugs or you can do sliding resistance test on the pins ,yellow connector b59 22 pins black yellow wire at pin 20 for the ecm
black connector 16 pins black yellow wire pin 16 for tcm
key on engine off out put of ecu 4 to 5 volts
unplug tcu key on engine off 4 to 5 volts
it could need a ecu or tcm depending on your finding s
i have a tcu if needed
charlie