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What this code means
This alarm occurs when the feedforward PWM generated by the controller to supply the Electromechanical Brake and the actual feedback voltage on the Electromechanical Brake are not matched in between. The diagnosis is made only when the Tiller Switch is active. Then: a) When the feedforward PWM is less than 10% of the battery voltage, the Actual voltage on the Electromechanical Brake is expected low. If it is higher than 14 V it means the Electromechanical Brake never Brakes the truck (probably the Driver of the Electromechanical Brake is short circuited) and this alarm occurs. b) When the feed
Applies to: ZAPI AC-0 SSL Sensored inverter (traction & pump configuration).
Possible causes / checks (from the source)
Probably it is necessary to replace the controller because the driver of the Electromechanical Brake has a failure.
Need the part?
If diagnosis points to a failed sensor, solenoid, controller or harness part, send us the code (MDI-PRC 16), machine model and serial number — we quote genuine and OEM replacement parts for export.
Ask for the replacement part on WhatsAppSource: ZAPI AC-0 SSL Sensored User Manual (AE0ZP0EC) via ManualsLib; corroborated by ZAPI AC0 Inverter manual (eastelite.co.za). Cross-checked in two independent sources. Compiled 2026-10-30. No manufacturer affiliation.