U0228 code meaning
Lost Communication With Door Window Motor G
What U0228 means
U0228 concerns door window motor G, the last letter of this group. No manufacturer documents U0228 publicly. GM shows that a networked window motor does not automatically mean these generic codes: in the 2011 Saab 9-5 the body control module runs the front passenger and driver motors as devices 0 and 4 on LIN bus 3 and the two rear motors on LIN bus 4, and flags a lost motor with GM's own U1530, U1534, U1540 or U1544. Some motors do without Hall sensors; a Gentherm patent derives speed and pinch events from the current ripple, which still calls for electronics at the motor and thus a bus node. Which door carries G is up to the maker. No MIL.
U0228 at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modeNot expected
- Repair difficultyMedium, DIY possible
- Typical labor0.5 to 3 hours
- Clears after repairWhen cleared with a scanner
Symptoms of U0228
- Window in the affected door does not move
- Pinch protection and one-touch operation unavailable
Common causes of U0228
- Most likelyBroken bus or supply wire in the door harness
- PossibleCorroded or loose motor connector
- PossibleElectronics of window motor G failed
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Door window motor gLin bus
What each part of U0228 means
| U | Network system: communication between the control modules (CAN bus). |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 28 | The exact fault in that area. |
What to do next
- Note U0228 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 U0228
What does U0228 mean?
U0228 means "Lost Communication With Door Window Motor G". U0228 concerns door window motor G, the last letter of this group. It is a generic code, so it means the same on every make.
Is it safe to drive with U0228?
U0228 does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will U0228 fail an emissions test?
U0228 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 U0228 to fix?
Difficulty: medium. A typical repair takes 0.5 to 3 hours of work. A careful DIY repair is possible with basic tools and a scanner.
Will U0228 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.