U014DLost Communication With Mirror Control Module B
- Generic OBD-II code · Network
- How the car detects it
- U014D concerns the second networked mirror unit. Modern mirrors carry motors for adjustment and folding, a heating element, auto-dimming glass, turn-signal repeaters or blind-spot lamps, and the electronics for them often sit on the bus as their own node. J2012 provides two such units, and the receiver, usually the body or door controller, stores U014D when unit B stops replying. No manufacturer documents U014D publicly. FCA assigns the A slot, U0213, to the interior mirror: in STAR case S2108000013 the body controller logged it after a configuration restore wrongly marked a combined rear-view mirror unit as fitted, without any customer effect. Which mirror B is therefore depends on the make, often an outside mirror. Expect that mirror's adjustment, folding or heating to fail; no MIL. U044F is invalid data from B.
- What you may notice
- Mirror adjustment, folding or heating inoperative on one side
- Blind-spot or turn-signal lamp in the mirror dark
- Often no other effect; code found during a scan
- Likely causes
- LikelyBroken wire in the flexing harness between body and door
- PossibleFuse, power or ground of mirror module B missing
- PossibleVehicle configuration expects a mirror module that is not fitted (FCA case for module A)
- RareWater ingress or impact damage in the mirror housing
- Repair
- Medium · Often possible to do yourself.Typical cost: €30 – €600
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.