New Holland WorkMaster 50 Service Manual page 838

DTC 1D8-12-ECU internal failure - SPI communication error
Control Module : ECU
Context:
The Engine Control Unit (ECU) A-9000 monitors the communication between the ECU A-9000 processor and the
power stage controller over the SPI bus. If there is an error in the communication, 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] / 117