Network, generic

U0217 Lost Communication With Door Switch C

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

U0217 is set when door switch unit C no longer answers its master. How much breaks then depends on the door architecture. In NXP's LIN door reference SG2034 the driver's control switch panel is itself the LIN master and commands the front and rear window lifters, door locks and mirror as slaves; in the AN2205 layout the keypad is only a slave whose key states are read by the body controller, or alternatively by the window nodes. If the lost unit is the driver's panel, the remote buttons for the other windows can go dead together with its own keys, while a passenger panel usually affects one window. No manufacturer documents U0217 publicly, and the letter-to-door mapping is set by the maker. No MIL.

Likely causes

Broken wire in the flexing harness between door and body
Corroded or loose connector at the switch panel
Switch panel electronics failed
Fault in the door or body module that polls the panel

Symptoms

  • Other windows can no longer be operated from the driver's panel
  • Keys on the affected panel inoperative
  • Mirror adjustment from the panel unavailable

Repair estimate

DifficultyMediumDIY possible
Parts and labour€30–400
Time0.5–2.5 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

door switch clin bus

Related codes

U0215U0216U0218U0219U0220U0221U0518

References: nxp.com, nxp.com, patents.google.com.