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C0131 — ABS Pressure Differential Fault

SeriousABSPower derate likely — plan to stop soon

Seen on: Heavy Truck

ABS Pressure Differential Fault. Common causes: Brake pressure imbalance detected.

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How serious is it?

Serious. Power derate likely — plan to stop soon.

Most likely causes

  1. Brake pressure imbalance detected
  2. Air in brake system
  3. leaking caliper

First moves (roadside)

  1. Bleed brake system
  2. check for leaks
  3. inspect calipers and wheel cylinders

FAQ

What does C0131 mean?

ABS Pressure Differential Fault. Common causes: Brake pressure imbalance detected.

How serious is C0131?

Serious — Power derate likely — plan to stop soon.

What's the most likely cause of C0131?

The most common cause is: Brake pressure imbalance detected. Other possibilities include Air in brake system; leaking caliper.

Can I keep driving with C0131?

Power derate likely — plan to stop soon. When in doubt, get a qualified mobile diesel tech on the truck before continuing.

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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.