Network, generic

U0269 Lost Communication With Image Processing Sensor E

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

U0269 is a further member of GM's object detection group, kept by the active safety module first on 2015 Escalades with the Y66 driver assist package and, after a 2017 update, on many 2013–2018 Buick, Cadillac and Chevrolet models; GM does not publish which sensor letter E names. Its known trap is in the workshop: that bus uses its own circuits 3813 and 3811, which run to terminal 3 and terminal 11 of the DLC, which older scan tools seldom used. A worn MDI interface or cable on those pins can therefore produce a false U0269 and block any contact with the radars and front camera. GM's check is to try the same tool on a fault-free Y66 Escalade or with the EL-47955-1 loopback adapter before suspecting the sensor, (PIT5441B, PIT5441C). A genuine loss switches off the assistant that relies on sensor E.

Likely causes

Defective scan tool interface or cable on the object detection pins, false code
Object detection bus wiring damaged, for example in the front fascia
Sensor E without power or ground
Sensor E internally faulty

Symptoms

  • Scan tool cannot reach radars or front camera, several U-codes at once
  • Service Active Safety, Service Driver Assist or lane departure message
  • Code present only while a particular tester is connected

Repair estimate

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

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

Parts involved

image processing sensor evehicle bus wiring

Related codes

U056AU0268U026AU0075

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