Network, generic

U023A Lost Communication With Image Processing Module A

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

U023A reports loss of image processing module A, usually the windscreen camera feeding lane keeping, auto high beam and collision warning. Ford calls it IPMA: Mustang 2024 (SSM 52077) logs U023A in the SCCM after a remote start with Pre-Collision Assist unavailable, and F-150 2021-2023 (TSB 24-2267) shows U023A:08 after SCCM programming, fixed by IPMA software. GM PIT5482 (2016 Tahoe, Escalade, Silverado and others) forbids replacing the front camera for a history U023A with Service Front Camera; PIC5814 (2013 ATS, XTS, SRX) says the short range radars log it at every shutdown, no repair needed. Toyota T-TT-0352-15: Highlander meters swapped from cars without LDA keep it for good. Ford's 2014 list: no MIL.

Likely causes

Camera module software or low power mode handling (Ford IPMA)
History code logged at power down without real fault (GM PIC5814)
Instrument cluster swapped from a car without lane departure alert (Toyota)
Camera plug or wiring at the windscreen damaged

Symptoms

  • Service front camera or pre-collision assist unavailable message
  • Lane keeping and auto high beam off
  • Code only stored as history

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 module acan bus

Related codes

U023BU023CU053BU0235

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