U015C code meaning
Lost Communication With Automated Driving System Control Module A
Network system Generic code U01xx codes Check engine light
What U015C means
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.
U015C at a glance
- Check engine lightYes, usually on
- Emissions testNot an emissions code
- Limp modePossible
- Repair difficultyWorkshop only
- Typical labor0.2 to 3 hours
- Clears after repairWhen cleared with a scanner
Symptoms of U015C
- Automatic Emergency Braking Unavailable message
- Adaptive cruise and lane settings not stored between drives
- MIL on (Stellantis)
Common causes of U015C
- Most likelySoftware in front radar or ADAS decision module outdated (Stellantis TSBs)
- PossibleEthernet cable routed too tight, connector pins loosened
- PossibleADS control module A without power or ground
- Less likelyADS control module A internally faulty
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Ads module aCAN bus
What each part of U015C means
| U | Network system: communication between the control modules (CAN bus). |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 5C | The exact fault in that area. |
What to do next
- Note U015C and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about U015C
What does U015C mean?
U015C means "Lost Communication With Automated Driving System Control Module A". 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. It is a generic code, so it means the same on every make.
Is it safe to drive with U015C?
Drive gently and only to a workshop. With U015C the car can go into limp mode (reduced power) to protect itself.
Will U015C fail an emissions test?
U015C is not an emissions code, so on its own it usually does not fail an emissions test. Other stored codes or a lit check engine light still can.
How hard is U015C to fix?
Difficulty: workshop only. A typical repair takes 0.2 to 3 hours of work. This is a job for a workshop.
Will U015C clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.