Network, generic

U026F Lost Communication With Image Processing Sensor K

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

Neither U026F nor the meaning of letter K appears in published manufacturer material. Some image sources are optional or arrive with towing equipment, and that matters before diagnosing a silent camera. GM ties the turn signal activated camera view of 2025–2026 Escalade, Tahoe, Suburban, Yukon, Silverado EV and Sierra EV to option code TRG, the trailer camera provisions. Without that option the feature does not exist at all; with it, a view that failed to appear without a trailer attached was put right by radio software (PIT6366, PIT6366A). So confirm first that the vehicle is built and configured for an extra camera. A genuine loss of sensor K removes only its view or assistant; there is no MIL and no effect on emissions.

Likely causes

Camera function expected although the vehicle lacks the option or configuration
Plug connection of an add-on or trailer camera open or corroded
Display or radio software not handling the camera input
Sensor K internally faulty

Symptoms

  • Extra camera view missing or greyed out
  • View works only with or only without a trailer connected

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€0–800
Time0.3–2.5 h

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

Parts involved

image processing sensor kvehicle bus wiring

Related codes

U0570U026EU0270

References: static.nhtsa.gov, static.nhtsa.gov.