U0157Lost Communication With Information Center B
- Generic OBD-II code · Network
- How the car detects it
- U0157 is set when the second information display, Information Center B, stops transmitting on the vehicle bus. J2012 provides two such driver information displays, A (U0156) and B, separate from the instrument cluster (U0155) and the head-up display (U0158); which screen counts as B is up to the manufacturer. The setting logic is the generic one GM documents for U0100-U02FF: a monitored periodic message is missing while the supply sits between 9 and 16 V, and every module waiting for it logs the code. No manufacturer documents U0157 publicly; GM's list carries only U0155 and U0158. The display stays dark or frozen, the rest of the car is mostly unaffected, and no MIL comes on.
- What you may notice
- Secondary display dark, frozen or showing no data
- Messages normally shown on display B missing
- Code stored in several modules
- Likely causes
- LikelyDisplay unit B without power or ground (fuse, connector)
- PossibleBus line or connector behind the dashboard damaged
- RareDisplay software hang or failed update
- RareInformation Center B internally faulty
- Repair
- Medium · Usually a job for a workshop.Typical cost: €60 – €900
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.