U0191
Lost Communication With Television
Communication network (infotainment)
Generic OBD-II
Low
What it means
U0191 means the network has lost communication with the in-car television or entertainment display module. With it offline the screen goes blank or stops responding. This is an infotainment-only fault — it has no effect on how the vehicle drives, steers, or brakes — so it's a low-priority repair once you've confirmed no other communication codes are present.
Low
Can I keep driving? Yes — only the in-car television/display is affected. Everything about how the car drives is unchanged.
Common symptoms
What you'll notice
- In-car TV or rear-seat display blank or unresponsive
- Television module unreachable when scanned
- Possible infotainment error message
- No effect on engine, brakes, or other driving systems
Common causes
Most likely first
- Open, shorted, or chafed wiring to the television moduleLikely
- Corroded or loose connector at the moduleCommon
- Blown fuse or lost power/ground to the moduleCommon
- Failed television/display moduleLess often
- Bus fault preventing the module from reportingLess often
How to diagnose & fix
Work through it in order
- Scan all modules and confirm the television module is offline.
- Check its power, ground, and fuse feeds.
- Inspect the wiring and connector at the module for damage or corrosion.
- Test the bus lines to the module for open or short.
- If wiring and power are good, replace the module, clear the code, and confirm the display works.
FAQ
Quick answers
Is it safe to drive with U0191?+
Yes. Only the entertainment display is affected — nothing about how the vehicle runs, steers, or brakes is impacted.
Can I just clear U0191?+
It returns while the module stays offline, but since only the TV is affected it's a low-priority fix.
Related codes
Often seen with U0191
Read & clear U0191 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX