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 37003 — Power supply logique fault

Error

ABB 37003 (“Power supply logique fault”): Computer +/- 15V supply voltages out of tolerance. Likely part: Alimentation logique (power supply logique).

Updated 2026-10-22 · LogrobotLM reference

What it means

Computer +/- 15V supply voltages out of tolerance.

What to check

  • Check the controller cabinet power supply unit (Power supply) and the physical connectors.
  • Note: On IRC5 this becomes the logic power supply failures of the cabinet or of the axis CPU board.

Part to check / replace

ABB 37003 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 →