Posted March 25Mar 25 So my 2000 started throwing some odd codes. It's showing a P1698 and a P1689 . No Trans bus messages and egr actuator....But here is why they're weird. My truck is a 5 speed from factory, and is pre-EGR. Any ideas what could cause this?
March 27Mar 27 Owner https://mopar1973man.com/cummins/articles.html/24-valve-2nd-generation_50/51_engine/obdii-error-codes_94/p1689-no-communication-between-ecm-and-vp44-r135/?&do=getNewComment&d=4&id=135https://mopar1973man.com/cummins/articles.html/24-valve-2nd-generation_50/51_engine/obdii-error-codes_94/p1698-no-bus-message-received-from-pcm-r141/?&do=getNewComment&d=4&id=141These are the correct codes, and these are the correct code definitions.
So my 2000 started throwing some odd codes. It's showing a P1698 and a P1689 . No Trans bus messages and egr actuator....
But here is why they're weird. My truck is a 5 speed from factory, and is pre-EGR. Any ideas what could cause this?