U0219 code meaning
Lost Communication With Door Switch E
What U0219 means
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.
U0219 at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modeNot expected
- Repair difficultyMedium, DIY possible
- Typical labor0.5 to 2.5 hours
- Clears after repairWhen cleared with a scanner
Symptoms of U0219
- Window, mirror or lock buttons in one door inoperative
- Switch illumination off
- Fault changes when the door is opened or closed
Common causes of U0219
- Most likelyBroken wire in the door hinge area (flexing harness)
- PossibleWater ingress into the door switch pack
- PossibleSwitch unit E without power or ground
- Less likelyDoor switch unit E faulty
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Door switch moduleDoor harness
What each part of U0219 means
| U | Network system: communication between the control modules (CAN bus). |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 19 | The exact fault in that area. |
What to do next
- Note U0219 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about U0219
What does U0219 mean?
U0219 means "Lost Communication With Door Switch E". U0219 means the networked door switch unit E is no longer heard. It is a generic code, so it means the same on every make.
Is it safe to drive with U0219?
U0219 does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will U0219 fail an emissions test?
U0219 is not an emissions code, so on its own it usually does not fail an emissions test. Other stored codes or a lit check engine light still can.
How hard is U0219 to fix?
Difficulty: medium. A typical repair takes 0.5 to 2.5 hours of work. A careful DIY repair is possible with basic tools and a scanner.
Will U0219 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.