What usually causes it
- A damaged wire or a loose, rusty plug on the network line
- A blown fuse for the body control computer
- A weak battery or a bad ground
- A failed body control computer
U0140Starts at: Get it checked this week
Lost contact with the body control computer
Other computers in the car cannot talk to the body control computer, which runs things like the lights, door locks, windows and alarm.
Check this first
Check that the battery cables are tight and clean, and look at the fuses in the fuse box.
What to watch for
- Lights, locks, windows or wipers acting strangely
- A battery that goes dead overnight
- The car will not start, or does not recognize the key
Can I keep driving?
We rate U0140 as Get it checked this week. It is not an emergency yet, but it can get worse. If the light starts flashing, stop driving soon.
Quick answers about U0140
What does U0140 mean?
Lost contact with the body control computer. Other computers in the car cannot talk to the body control computer, which runs things like the lights, door locks, windows and alarm.
Can I keep driving with U0140?
We rate U0140 as Get it checked this week. It is not an emergency yet, but it can get worse. If the light starts flashing, stop driving soon.
What usually causes U0140?
The most common causes, in order: A damaged wire or a loose, rusty plug on the network line; A blown fuse for the body control computer; A weak battery or a bad ground; A failed body control computer.
Estimates only. A mechanic should confirm. The same code can mean slightly different things on different cars; the app explains it for your exact year, make, model and mileage.