ABB Error 0101 — I/O CPU fault
ErrorABB 0101 (“I/O CPU fault”): Logic fault in instruction processing by the I/O computer. Likely part: I/O CPU.
Updated 2026-10-22 · LogrobotLM reference
What it means
Logic fault in instruction processing by the I/O computer.
What to check
- Replace the robot cabinet computer board.
- Note: Microprocessor chip fault, similar to IRC5 RCC board faults.
Part to check / replace
ABB 0101 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
Same hardware involved
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 →