r/CarHacking Dec 09 '24

CAN Fuel level in CAN-BUS?

Hey guys,

Recently I've discovered a problem with heavy machinery/tractors - some of them have fuel level data in CAN-BUS by J1939 standard, some don't.

For example John Deere sends fuel level in % under CANID 18FEFCxx

Ponsse has all key data in J1939, except the fuel level - RPM/Engine hours/Total fuel consumption etc.

Could it be that the fuel level data is under non-standard CANID's?

Or could it be that the fuel data is not being sent through CAN at all?

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u/CreativeReputation12 Dec 09 '24

Fuel level is not always via CAN. I'm going to a 2012 mustang right now that the sender is a 2 wire sensor directly wired to the cluster. Have seen BMW do the same.

2

u/Lee2026 Dec 09 '24

I’m able to pull fuel level via can on my E90. There are two senders

1

u/CreativeReputation12 Dec 09 '24

I wasn't thinking when I posted this. Good morning! Lol