Network, generic

U011F Lost Communication With V2X Module

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

U011F concerns the V2X module, the radio unit through which a car exchanges messages with other vehicles, roadside infrastructure, pedestrians' devices or the network (vehicle-to-everything), either via short-range DSRC/ITS-G5 or via cellular C-V2X. It passes alerts such as an approaching hazard or signal-phase information on to the driver and to assistance systems. Another module stores U011F once the V2X unit's periodic frames stop. No manufacturer documents the code publicly; since the module has no role in emission control, a MIL is not expected. U042A covers invalid V2X data, U0198 a lost telematics module. For the driver the connected warnings simply disappear, sometimes with a cluster message; the car drives normally.

Likely causes

V2X module without power or ground
Damaged bus wiring or connector, e.g. after roof or antenna work
Software or configuration fault in the V2X or gateway module
V2X module internally faulty

Symptoms

  • Connected traffic and hazard warnings unavailable
  • Possible service message in the cluster

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€60–1,200
Time0.5–3 h

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

Parts involved

v2x modulecan bus wiring

Related codes

U042AU0198

References: en.wikipedia.org, law.cornell.edu.