C0290 — ABS Lost Communication with PCM
Seen on: Heavy Truck
ABS Lost Communication with PCM. Common causes: CAN bus communication fault between ABS and PCM.
Your code rides along, so nearby mechanics see the fault before they quote you.
How serious is it?
Serious. Power derate likely — plan to stop soon.
Most likely causes
- CAN bus communication fault between ABS and PCM
- CAN bus wiring fault
- terminators missing
- module failure
First moves (roadside)
- Check J1939/CAN bus continuity
- verify 60-ohm termination resistance
FAQ
ABS Lost Communication with PCM. Common causes: CAN bus communication fault between ABS and PCM.
Serious — Power derate likely — plan to stop soon.
The most common cause is: CAN bus communication fault between ABS and PCM. Other possibilities include CAN bus wiring fault; terminators missing; module failure.
Power derate likely — plan to stop soon. When in doubt, get a qualified mobile diesel tech on the truck before continuing.
Find a mechanic or related guides
General diagnostic guidance for diesel engines (Cummins, Detroit, PACCAR, Volvo, Mack and more). Not a substitute for a scan-tool diagnosis on your specific truck.