Hello, just looking through the code information, the U0140 is listed as (U0140 Navigation receiver assembly)(Radio and display receiver assembly), So this looks more like a communication issue with the Can bus network, if there's an issue with the network itself and its shorting to ground or power, whatever may be happening can definitely cause issues with other modules on the network,
I'll post what's in service info about the code, but it looks like either the Nav system or Radio is having trouble communicating to the Main Body ECU. I'd expect more network codes in other modules if they were having issues as well,
Did you have a full system scan done of every module in the vehicle? Or where did this code come from? Granted the network might be going down after start up, but I don't think you would even be able to start the vehicle if it was completely down. You might not even be able to crank the vehicle at all.
This vehicle does look to have a CVT transmission, they are known for major issues.
But to see if the network activity looks ok, you would have to use an oscilloscope and actually look at the network data waveform to see if anything looks distorted. Or shorted to ground, power, etc. I wouldn't change anything else without having someone look at the vehicle and at least tell you what's wrong with it.
Monday, January 13th, 2025 AT 11:42 AM
