U0219Lost Communication With Door Switch E
- Generic OBD-II code · Network
- How the car detects it
- U0219 means the networked door switch unit E is no longer heard. In modern doors the switch packs for windows, mirrors and locks are often small bus nodes, typically LIN slaves under a door or body module, so each panel can report its own communication loss. The master that polls switch E stores U0219 once its replies stop; GM documents this setting rule for the whole U0100-U02FF range. No manufacturer documents U0219 publicly; GM's U-code list uses its own entries (U0203/U0204) for rear door switch panel modules instead. The letter E is assigned by the maker, so the door concerned must be taken from the vehicle's documentation. U0215 to U0218 and U0220 cover the other switches. Window or lock buttons fail; no MIL.
- What you may notice
- Window, mirror or lock buttons in one door inoperative
- Switch illumination off
- Fault changes when the door is opened or closed
- Likely causes
- LikelyBroken wire in the door hinge area (flexing harness)
- PossibleWater ingress into the door switch pack
- PossibleSwitch unit E without power or ground
- RareDoor switch unit E faulty
- Repair
- Medium · Often possible to do yourself.Typical cost: €30 – €400
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.