C0131 — ABS Pressure Differential Fault
Seen on: Heavy Truck
ABS Pressure Differential Fault. Common causes: Brake pressure imbalance detected.
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
- Brake pressure imbalance detected
- Air in brake system
- leaking caliper
First moves (roadside)
- Bleed brake system
- check for leaks
- inspect calipers and wheel cylinders
FAQ
ABS Pressure Differential Fault. Common causes: Brake pressure imbalance detected.
Serious — Power derate likely — plan to stop soon.
The most common cause is: Brake pressure imbalance detected. Other possibilities include Air in brake system; leaking caliper.
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.