Hello,
The only error codes that are defined by implementation level 2 of the ISOBUS standard are 1, 2 and 16 (Bits 0, 1 and 4).
1 = There was an error
2 = Out of memory
16 = Any other error
All other bits are reserved and must be transmitted as 0.
For more information, see bytes 3-4 for the faulty object id, and 5-6 for parent of faulty object. (Bytes numbered from 1-8)
Best regards
Stefan