LogrobotLM

LogrobotLM — AI fault diagnosis for ABB · KUKA · FANUC robots. It reads your robot backup in your browser (never uploaded) and pinpoints the fault. Try it free →

ABB Error 37101 — Brake failure

Error

ABB 37101 (“Brake failure”): Brake failure: a brake test has failed. Likely part: Freins moteur / Test de frein (Freins moteur / Test de frein).

Updated 2026-10-22 · LogrobotLM reference

What it means

Brake failure: a brake test has failed. The system reports that the measured holding torque does not reach the expected threshold; the root cause must be identified before returning to service.

What to check

  • Rerun the Brake Check routine cold, then warm.
  • Check the 24 V brake supply and the brake relay.
  • Check the mechanical wear of the brake and for oil in the brake housing.
  • Replace the motor/brake if the torque remains insufficient.
  • Note: Correlate with 37109 (brake release failure) and 50362 (motor brake).

Part to check / replace

ABB 37101 points to the hardware below — start here before ordering.

Tap a part for every code that points to it — and verify the exact variant for your controller before ordering.

Related codes

20252Motor / Thermal sensor / Temperature cable fault20253External device temperature high DRV137001Motor ON contactor activation error

Indicative field information — the robot manufacturer's manual and safety procedures always prevail. Never bypass a safety device; apply lockout/tagout (LOTO) before any physical intervention. How this reference is built →