Network, generic

U026E Lost Communication With Image Processing Sensor J

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

U026E is not documented publicly by any manufacturer, so it is not known which camera letter J denotes. Exposed outside cameras show where such links are vulnerable. Prevost fits a side camera rear view system, eMirror, to H3-45 coaches from model year 2019 and to its X3 series. Its instructions for re-aiming these mirror-replacing cameras call for new single-use rubber washers on reassembly so the cover mount stays watertight (MI20-13, MI20-13A). Water in an exposed camera housing or its plug is a typical start of corrosion, intermittent contact and finally a silent sensor. Wherever sensor J sits, its loss blanks only the view or function it serves; the engine and its emissions are not involved, and no MIL is expected.

Likely causes

Water in an exposed camera housing or plug, corroded contacts
Camera lead damaged at a hinge, mirror arm or body passage
Sensor J without supply
Sensor J internally faulty

Symptoms

  • One camera image black or frozen
  • Fault more frequent in rain or after washing

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€0–1,000
Time0.3–3 h

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

Parts involved

image processing sensor jvehicle bus wiring

Related codes

U056FU026DU026F

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