U0516Invalid Data Received From Door Switch A
- Generic OBD-II code · Network
- How the car detects it
- Here a door switch is a networked switch pack in a door trim panel that reports window, lock or mirror requests as data instead of through separate wires. U0516 is stored when frames from switch unit A arrive but fail the receiver's validity checks. No manufacturer publishes which door letter A stands for or documents this code; FCA lists the driver's switch as unit B, so A cannot simply be taken as the driver's side. NXP's car door keypad note AN2205 illustrates the scheme: the body controller polls the keypad over LIN about every 100 ms and receives a short status reply in which the slave also flags its own bus errors. Requests from a rejected switch are ignored or treated as released, so its buttons seem dead. U0215 is the lost-communication counterpart.
- What you may notice
- Buttons on one door switch pack without function
- Window or lock on that door only operable from other switches
- Likely causes
- PossibleElectronics of switch unit A faulty (moisture, cracked solder joints)
- PossibleDamaged data or ground wire in the door harness
- RareReplacement switch of the wrong variant or software level
- Repair
- Medium · Often possible to do yourself.Typical cost: €0 – €350
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.