John Deere 8420 will not move. CAN bus diagnostics
ZK MasterTech ZK MasterTech
86.7K subscribers
52,989 views
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 Published On Jun 14, 2024

This tractor had me stumped for a while. Took some serious diagnosing and testing to figure out what was crashing the CAN bus on this tractor. Engine would sometimes cutout or die and sometimes the transmission would default to neutral. Limited controllers would show up on the corner post display and there were no codes to follow.

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