Network, generic

U0065 Vehicle Communication Bus E Performance

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

U0065 reports that Vehicle Communication Bus E is present but its communication is unreliable. In Audi and Volkswagen gateways this slot stands for the infotainment CAN. Audi lists U006500, labelled there as no communication on the infotainment CAN, in gateway J533 of the 2015-18 A3, paired with U111000 in the instrument cluster: the infotainment unit will not switch on, cannot be operated or goes blank now and then. The cause is a grey 12-pin contact carrier not slotted correctly into the quad-lock connector of control unit J794; both parts are replaced. Volkswagen's 2017 Golf family campaign 91Q1 warns that the gateway may store U0065 during the infotainment software update because J794 drops off briefly; such entries are intermittent and clear.

Likely causes

Contact carrier not seated in the infotainment unit's quad-lock connector (Audi A3)
Brief dropout of the infotainment unit during a software update (VW Golf)
Loose or corroded terminals on Bus E

Symptoms

  • Infotainment cannot be switched on or operated, screen sporadically blank (Audi A3)
  • Instrument cluster reports restricted functions
  • Stored only as a passive entry after a software update

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€50–500
Time0.5–2 h

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

Parts involved

bus e wiringcontrol moduleinfotainment modulegateway module

Related codes

U0029U0047U0056U0064U0184

References: static.nhtsa.gov, static.nhtsa.gov, law.cornell.edu.