Network, generic

U015C Lost Communication With Automated Driving System Control Module A

Check engine lightOn
EmissionsNot relevant
Drive cycleNot required
Limp modePossible

U015C points to automated driving system control module A, the computer that fuses camera and radar data for adaptive cruise, lane centring and emergency braking. Stellantis documents it in detail. In 2024-25 Dodge Charger and Jeep Wagoneer S with Active Driving Assist (TSB 08-256-25 to 08-259-25), MIL plus U015C-00 and U045D-00 call for new software in the front long-range radar. TSB 08-190-24 reflashes the Central ADAS Decision Module on early 2024 Wagoneer and Grand Wagoneer. Case S2508000095 (2026 Wagoneer) shows CADM2 logging U015C with an Ethernet link error, traced to tight cable routing. U015D is module B. Assistance features drop out and the MIL can light.

Likely causes

Software in front radar or ADAS decision module outdated (Stellantis TSBs)
Ethernet cable routed too tight, connector pins loosened
ADS control module A without power or ground
ADS control module A internally faulty

Symptoms

  • Automatic Emergency Braking Unavailable message
  • Adaptive cruise and lane settings not stored between drives
  • MIL on (Stellantis)

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€50–2,500
Time0.2–3 h

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

Parts involved

ads module acan bus

Related codes

U015DU045DU015EU015F

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