New Holland WorkMaster 50 Service Manual page 1009

DTC 6D4-04-ECU internal failure - 'ABE active' reported due to
undervoltage detection
Control Module : ECU
Context:
The Engine Control Unit (ECU) A-9000 monitors the communication between CJ945 (power stage chips) and CY320
(power stage voltage supplier). If the ABE wire between the CJ-945 and CY320 becomes active due to an under-
voltage detection, this fault will occur.
Solution:
1. Check the ECU A-9000 for the appropriate software and re-flash, if necessary.
A. If the fault has been resolved, return the machine to service.
B. If the fault has not been resolved, escalate an ASIST concern.
Electrical systems - FAULT CODES
47866583_ 02/12/2015
55.12 [55.DTC] / 288