U0163Lost Communication With Navigation Control Module
- Generic OBD-II code · Network
- How the car detects it
- U0163 is logged when the navigation control module, the computer that works out position and route, stops communicating. In many cars this function is built into the head unit, in others it is a separate box behind the trim. Listeners such as the instrument cluster, a camera unit or the telematics module show turn arrows or a map on their own screens and therefore watch its messages; GM's general rule for U0100-U02FF codes applies: supervised message missing at 9-16 V. No manufacturer documents U0163 in an openly accessible source. U0162 refers to the navigation display, U016A to a separate GPS receiver, U0464 to implausible navigation data. Navigation, map and route guidance fail; no MIL.
- What you may notice
- Navigation and route guidance unavailable
- Turn arrows missing in the cluster or head-up display
- Code stored in the cluster or other display modules
- Likely causes
- LikelyNavigation unit fuse, supply or ground faulty
- PossibleConnector at the head unit or navigation box loose or corroded
- PossibleNavigation software hang or failed map/software update
- RareNavigation control module internally faulty
- Repair
- Medium · Usually a job for a workshop.Typical cost: €20 – €1,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.