U0415 — Invalid Data from ABS Module
What it means: Invalid Data from ABS Module.
How serious / can you keep driving: Serious. Power derate likely — plan to stop soon.
Check first: Check ABS module for faults
Don't risk it — look up listed providers near you and give them this code when you call.
Listed providers nearest Phoenix, AZ
Closest first. Tell them U0415 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 Phoenix, AZ · (623) 304-4187
- 0.0 mi away — based in Phoenix, AZ · (480) 458-7715
- 0.0 mi away — based in Phoenix, AZ · (480) 530-7347
Seen on: Heavy Truck
What U0415 means
Invalid Data from ABS Module. Common causes: ABS sending invalid data.
How serious is it?
Serious. Power derate likely — plan to stop soon.
Most likely causes
- ABS sending invalid data
- ABS module fault
- corrupted data
First moves (roadside)
- Check ABS module for faults
- update firmware
- replace module
FAQ
Invalid Data from ABS Module. Common causes: ABS sending invalid data.
Serious — Power derate likely — plan to stop soon.
The most common cause is: ABS sending invalid data. Other possibilities include ABS module fault; corrupted data.
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 U0415, or share the same subsystem.
- ECU Power Supply — Intermittent / Erratic (SPN 627 FMI 2)
- Battery / Charging Voltage — Low (SPN 168 FMI 18)
- Engine Controller (ECM) — Internal Fault (SPN 629 FMI 12)
- Battery voltage low during crank (SPN 168 FMI 17)
- J1939 proprietary datalink lost (SPN 625 FMI 9)
- J1939 Data Link — Communication Error (SPN 639 FMI 2)
- High Speed CAN Bus Fault (U0001)
- Lost Communication with ECM/PCM (U0100)
Same symptom: ABS or stability lamp
Other codes behind a lit ABS or stability lamp — the ones that turn an inspection into an out-of-service order.
- Lost comms with ABS (U0121) · Electrical, Charging & Network
- Lost Communication with Vehicle Dynamics Control Module (U0122) · Electrical, Charging & Network
- Left front wheel speed sensor erratic (SPN 789 FMI 2) · Brakes, ABS & Stability
- Left front wheel speed abnormal signal (SPN 789 FMI 8) · Brakes, ABS & Stability
- Right front wheel speed sensor erratic (SPN 790 FMI 2) · Brakes, ABS & Stability
- Right front wheel speed abnormal (SPN 790 FMI 8) · Brakes, ABS & Stability
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.