Network, generic

U05B2 Invalid Data Received From Comfort and Convenience Display A

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

Stellantis calls its touch screens for climate, seat and similar comfort settings Comfort and Convenience Display Modules (CCDM); the Jeep Grand Wagoneer has one up front and a second one for rear passengers. U05B2 is logged when a receiver gets traffic from display A whose content is implausible. Which of the screens carries letter A is not published. Two field cases show what typically goes wrong: phantom touches that alter fan speed on their own, cured by a front or rear display with newer firmware (STAR S228A000013 Rev. A), and, on the 2025 Wagoneer S, massage graphics offered for seats without massage, fixed with a later part number and a proxi alignment (S2508000061). No manufacturer cites U05B2 itself; U02B1 is the lost-communication partner.

Likely causes

Display firmware with known faults, newer part number available
Display configuration not matching vehicle equipment, proxi alignment missing
Touch panel or display electronics defective
Loose or corroded connector at the display

Symptoms

  • Climate or seat settings change without input
  • Display shows functions the vehicle does not have
  • Comfort controls on the screen respond late or not at all

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€80–1,800
Time0.5–2 h

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

Parts involved

comfort display a

Related codes

U02B1U05B3U02B2

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