Network, generic

U0265 Lost Communication With Image Processing Sensor A

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

GM gives sensor A a clear identity: its bulletins describe U0265 as lost contact with the front view camera on the windshield (B174W), the camera for forward collision alert and steering assistance. On 2020 Cadillac CT4 and CT5 with forward collision alert that camera could reset itself; U0265 then came with U0566, U1962 and P25A2, a brake module request that can switch on the MIL, plus Service Driver Assist and Steering Assist Reduced messages. Reprogramming the camera was the cure, and only a frequent, easily repeated set of all three codes justified a new one (N202305180, PIC6404). On the 2024 Corvette the cluster could log U0265 because of camera software, with an amber braking-assist lamp that went out again; GM says reprogram and relearn, do not replace (25-NA-050). U0265 alone sets no MIL.

Likely causes

Windshield camera resets or drops off the bus because of its software
Camera hardware fault when the loss recurs often and is easy to repeat
Connector or supply at the camera mount disturbed, e.g. after windshield work
Fault on the shared bus that silences several sensors at once

Symptoms

  • Service Driver Assist or front camera message, lane and collision functions unavailable
  • Steering assist reduced message on some models
  • Emergency braking lamp briefly amber, then normal again

Repair estimate

DifficultyHardWorkshop job
Parts and labour€0–1,500
Time0.3–3 h

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

Parts involved

image processing sensor avehicle bus wiring

Related codes

U0566U026AU0268U0269U0075

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