Komatsu · E03
Swing (rotary) parking brake system fault
What this code means
Fault in the swing/rotary parking (holding) brake system (user code). Detail is given by service codes E203/E213 on PC200-7.
Applies to: PC200-6/PC200-7 excavator (HYPER, user code).
Need the part?
If diagnosis points to a failed sensor, solenoid, controller or harness part, send us the code (E03), machine model and serial number — we quote genuine and OEM replacement parts for export.
Ask for the replacement part on WhatsAppSource: SINOCMP – Komatsu PC200-7 Error Code on the Monitor. Cross-checked in two independent sources. Compiled 2026-10-30. No manufacturer affiliation.