U045D code meaning
Invalid Data Received From Automated Driving System Control Module A
Network system Generic code U04xx codes Check engine light
What U045D means
Automated driving system control module A is a computer that merges radar and camera data and plans braking and steering for features such as adaptive cruise, lane centring and emergency braking. U045D means a partner hears it but gets implausible content; U015C is lost contact. Stellantis documents the code. Its TSBs 08-256-25 through 08-259-25 (Dodge Charger and Jeep Wagoneer S, model years 2024-25, Active Driving Assist) require a MIL together with U015C-00 or U045D-00, often with an emergency braking unavailable message; the fix is new software for the front long-range radar, rated at 0.2 h. STAR case S2508000095 for 2024-26 Wagoneer and Grand Wagoneer shows the CADM2 storing U045D-00 with a freeze frame about an unexecuted brake jerk request, traced to strained Ethernet cables. Assistance features switch off until repair.
U045D 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 U045D
- Automatic emergency braking unavailable message
- MIL on in affected Stellantis models
- Adaptive cruise and lane centring disabled
Common causes of U045D
- Most likelyOutdated software in the front long-range radar or ADAS module
- PossibleStrained or badly routed Ethernet cable with poor pin contact at the ADAS modules
- Less likelyInternal fault of the ADAS control module
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Ads module a
What each part of U045D means
| U | Network system: communication between the control modules (CAN bus). |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 5D | The exact fault in that area. |
What to do next
- Note U045D 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 U045D
What does U045D mean?
U045D means "Invalid Data Received From Automated Driving System Control Module A". Automated driving system control module A is a computer that merges radar and camera data and plans braking and steering for features such as 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 U045D?
Drive gently and only to a workshop. With U045D the car can go into limp mode (reduced power) to protect itself.
Will U045D fail an emissions test?
U045D 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 U045D to fix?
Difficulty: workshop only. A typical repair takes 0.2 to 3 hours of work. This is a job for a workshop.
Will U045D clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.