The 1698 code means either that there is no digital data communication from the the transmission controller OR from the body controller that is being received at the powertrain control module. Could be nothing more than a loose wire or can be a bad sensor.
is the ecm on a dodge 2001, 2500 diesel hard to replace??
Trouble code P0234 means:Engine overboost condition
No such part
#2 warm air heater relay wiring fault
AnswerYes if you have the moter mounts from the 2001 moter.
This is just a guess but No, everthing changed between those two years.
Inline 6
Green
Green
47re
R134a
It is under the dash on the driver side.