Pulling up error codes on 912IS via the G3X

Hi Mike

The Garman and the Dynon both use the instrument CanBus feed for them, not the maintenance feed CanBus.  As such this is not the codes you get from the BUDS system via a Dongle.  You need to have it connected to the maintenance port and use a dongle with the BUDS software.  There is information on how to connect and download the BUDS error/fault codes in the respective heavy maintenance manual.  

To learn how the system works and do diagnostics requires specialized training.  

Cheers

Mike,

Those are CAN transmit and receive errors.  They indicate errors over the FADEC CAN bus network, but are not engine error codes. The CAN will operate with some Tx/Rx errors because it is designed to recognizes and discard them. However, most well constructed CANs will have very few or no errors.  I would check the CAN wiring from the HIC interface to the Garmin GEA-24 engine module.  At the GEA-24, the FADEC information is transferred on to the Garmin CAN bus and relayed to the GDU460. If I had to guess, I think you have a CAN wiring problem between the HIC interface and the GEA-24. There are two FADEC CAN buses, one for each lane and they tie together just before connecting to the GEA-24.  Here is some information regarding CAN errors.

https://www.csselectronics.com/pages/can-bus-errors-intro-tutorial