U0200 code meaning
Lost Communication With Door Control Module B
What U0200 means
U0200 means door control module B has dropped off the bus; most makers use B for the front passenger door. For the 2005–2010 Chrysler 300 and Charger, bulletin 08-061-12 names it the passenger door module and replaces it when locks and windows stay dead. Audi bulletin 2051276 (Q5 2018) finds U020000 in gateway J533 with a dead passenger window or lock switch, sometimes U10BA00 or U111100 in the driver door, and cures it with a one-minute fuse reset and new software for J387. Stellantis case S2423000040 (Durango 2023) sees U0200-00 with an intermittent passenger lock and checks pins, the lock rod and finally the latch. VW tech tip 97-21-02 pairs U019900 or U020000 with loose pins at the A-pillar. Usually no MIL; U0501 is invalid data.
U0200 at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modeNot expected
- Repair difficultyMedium, DIY possible
- Typical labor0.3 to 3 hours
- Clears after repairWhen cleared with a scanner
Symptoms of U0200
- Passenger window or lock switch inoperative
- Door does not lock or unlock centrally, sometimes intermittent
- Child lock or door warning message in the cluster
Common causes of U0200
- Most likelyPassenger door module software (Audi Q5 J387 update)
- Most likelyLoose, bent or corroded pins in the door or A-pillar connector
- PossibleBroken wires in the door hinge harness
- Less likelyPassenger door module faulty (Chrysler 300/Charger)
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Door module bCAN bus
What each part of U0200 means
| U | Network system: communication between the control modules (CAN bus). |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 00 | The exact fault in that area. |
What to do next
- Note U0200 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 U0200
What does U0200 mean?
U0200 means "Lost Communication With Door Control Module B". U0200 means door control module B has dropped off the bus; most makers use B for the front passenger door. It is a generic code, so it means the same on every make.
Is it safe to drive with U0200?
U0200 does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will U0200 fail an emissions test?
U0200 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 U0200 to fix?
Difficulty: medium. A typical repair takes 0.3 to 3 hours of work. A careful DIY repair is possible with basic tools and a scanner.
Will U0200 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.