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.
Ask for the replacement part on WhatsAppSource: 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.