Motor Vehicle Maintenance & Repair Stack Exchange is a question and answer site for mechanics and DIY enthusiast owners of cars, trucks, and motorcycles. It only takes a minute to sign up.
Sign up to join this community
My car does not provide the fuel level data to the obd.
this is the data the car do provide:
engine coolant temperature, engine load, ambient air temperature, engine rpm, intake manifold pressure, air intake temperature, speed, short term fuel, long term fuel, throttle position, timing advance, wideband air fuel ratio, air fuel ratio.
Is there any way to calculate the current fuel level with the given data?
No there is no way accurately calculate fuel level if the ECU doesn't broadcast it.
As Paulster2 said you may be able to calculate fuel used over distance but it would be very very inaccurate.
One option would be to look at the wiring diagram of your vehicle and see how the fuel sensor is connected to the gauge, if it goes through a control module or MCU then you may be able to analyse the raw CAN bus data. If it is connected through a control module there might be a manufacture specific PID, you would have to work this out by connecting a high level diagnostic tool and looking at the live data while analysing the CAN bus messages.
