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Komatsu · CA187
Sensor Supply 2 Voltage Low Error

What this code means

Sensor power supply No. 2 voltage is too low (low error), per the PC200-8M0 shop manual failure codes table. Action level L03. (Note: one web list gives the opposite direction for this code; the factory manual table was followed.)

Applies to: PC200-8/PC200-8M0 excavator (engine controller).

Need the part?

If diagnosis points to a failed sensor, solenoid, controller or harness part, send us the code (CA187), machine model and serial number — we quote genuine and OEM replacement parts for export.

Source: Komatsu PC200-8M0 Shop Manual (SEN06131-00) – Failure codes table. Single published source — confirm against the manual for your exact model before ordering parts. Compiled 2026-10-30. No manufacturer affiliation.