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ABB Error 39425 — Drive unit measurement failure

Error

ABB 39425 (“Drive unit measurement failure”): Drive unit measurement failure: a current measurement circuit of the indicated drive unit is faulty. Likely part: Drive Unit / Circuit de mesure de courant (Drive Unit / Circuit de mesure de courant).

Updated 2026-10-22 · LogrobotLM reference

What it means

Drive unit measurement failure: a current measurement circuit of the indicated drive unit is faulty. The servo control no longer has a reliable image of the motor current.

What to check

  • Internal drive unit error: little can be done on the wiring side.
  • Nevertheless check the power connectors and that there is no abnormal heating.
  • Note the Supervision Code.
  • Replace the drive unit if the error recurs after a complete shutdown/start-up cycle.
  • Note: Not to be confused with a position measurement system error (38xxx): here the measurement concerns the current in the drive unit, not the axis position.

Part to check / replace

ABB 39425 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

32540Drive unit / firmware fault32541Drive unit / firmware fault39008Drive units fault

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 →