U0202 code meaning
Lost Communication With Door Control Module D
What U0202 means
U0202 means the body network no longer hears from door control module D, which most four-door layouts give to the right rear door. FCA STAR case S1908000143 (Rev. A, August 2020) records it on a minivan with Stow 'n Go seating: U0202 for the right rear door module came together with U0201 (left rear), U0230 (power liftgate) and the interior bus codes U0010/U0011, while the owner had a no-start, many lit warning lamps and single wiper strokes. The cause was a chafed body harness beside the right B-pillar, at the outer mount of the passenger seat or along the floor routing next to the seat storage bins, including splice S910. A dead rear window or lock on that side is typical; no MIL.
U0202 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 U0202
- Right rear window or lock inoperative
- Several warning lamps and further U-codes at the same time
- Possible no-start or unrequested wiper stroke when the bus wiring is damaged
Common causes of U0202
- Most likelyBody harness chafed at the B-pillar or under the seats (FCA minivan)
- PossibleBroken wires in the rear door hinge harness
- PossibleCorroded splice or door connector
- Less likelyRear door module faulty
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Door module dCAN bus
What each part of U0202 means
| U | Network system: communication between the control modules (CAN bus). |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 02 | The exact fault in that area. |
What to do next
- Note U0202 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 U0202
What does U0202 mean?
U0202 means "Lost Communication With Door Control Module D". U0202 means the body network no longer hears from door control module D, which most four-door layouts give to the right rear door. It is a generic code, so it means the same on every make.
Is it safe to drive with U0202?
U0202 does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will U0202 fail an emissions test?
U0202 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 U0202 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 U0202 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.