C0290 — ABS Lost Communication with PCM
What it means: ABS Lost Communication with PCM.
How serious / can you keep driving: Serious. Power derate likely — plan to stop soon.
Check first: Check J1939/CAN bus continuity
Don't risk it — look up listed providers near you and give them this code when you call.
Listed providers nearest Macon, GA
Closest first. Tell them C0290 and what the truck is doing. RoadService.app lists these providers and does not employ them or carry out the repair.
- 0.0 mi away — based in Macon, GA · (478) 538-3245
- 0.0 mi away — based in Macon, GA · (478) 216-8330
- 0.0 mi away — based in Macon, GA · (706) 536-3376
Seen on: Heavy Truck
What C0290 means
ABS Lost Communication with PCM. Common causes: CAN bus communication fault between ABS and PCM.
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.
Related codes
Codes that commonly appear alongside C0290, or share the same subsystem.
- Service brake air pressure — primary circuit low (SPN 519 FMI 4)
- Service brake air pressure — secondary circuit low (SPN 520 FMI 4)
- Left front wheel speed sensor erratic (SPN 789 FMI 2)
- Left front wheel speed abnormal signal (SPN 789 FMI 8)
- Right front wheel speed sensor erratic (SPN 790 FMI 2)
- Right front wheel speed abnormal (SPN 790 FMI 8)
- Left rear (LF drive) wheel speed erratic (SPN 791 FMI 2)
- Left rear wheel speed abnormal (SPN 791 FMI 8)
Same symptom: Lost communication
Other datalink faults. A U-code is a network problem and is diagnosed at the datalink, not at the module that went quiet.
- Lost J1939 datalink message from VECU (SPN 1807 FMI 9) · Brakes, ABS & Stability
- Cab controller J1939 message lost (SPN 1811 FMI 9) · Brakes, ABS & Stability
- Vehicle Speed Signal — Erratic / Lost (SPN 84 FMI 19) · Brakes, ABS & Stability
- Engine Oil Pressure — Extremely Low (SPN 100 FMI 1) · Lubrication
- High Speed CAN Bus Fault (U0001) · Electrical, Charging & Network
- Lost Communication with ECM/PCM (U0100) · Electrical, Charging & Network
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.