Cadillac U0285
Lost Communication with Active Grille Air Shutter 2 Motor Module • U1345: Engine Control Module LIN Bus 1 • U135A: Lost Communication with Shift to Park Range Actuator • U135E: Los
Quick answer
For 2017–2018 Cadillac CT6 vehicles in the US, DTC U0285 is identified in a Cadillac/NHTSA manufacturer communication as “Lost Communication with Active Grille Air Shutter 2 Motor Module.”
This page separates verified manufacturer/regulator evidence from supporting material. Unsupported causes, repairs or safety conclusions are not guessed.
Watch Videos
Relevant videos play here without leaving this diagnostic page.
No sufficiently relevant embeddable video has been accepted for this diagnostic yet.
Videos are supporting material and never override OEM or regulator evidence.
1. What does U0285 mean?
For 2017–2018 Cadillac CT6 vehicles in the US, DTC U0285 is identified in a Cadillac/NHTSA manufacturer communication as “Lost Communication with Active Grille Air Shutter 2 Motor Module.”
2. Technical explanation
The verified source lists U0285 among diagnostic trouble codes covered by Cadillac bulletin 15-NA-087. The supplied evidence establishes the code description, but does not establish a specific failure cause, diagnostic procedure, or repair for an individual vehicle.
3. What system is affected?
Active Grille Air Shutter 2 Motor Module communication. The supplied evidence does not further identify the network, module location, or system operation.
4. How serious is this code?
Not yet established by verified evidence.
5. Symptoms you may notice
Not yet established by verified evidence.
6. Possible causes
- Not yet established by verified evidence.
7. Can I still drive the vehicle?
Not yet established by verified evidence.
8. Can I charge the vehicle?
Not yet established by verified evidence.
9. What you can safely do
- Have the vehicle evaluated by a qualified Cadillac service provider if the code is present.
10. Step-by-step troubleshooting
- A qualified technician should use the applicable Cadillac service information and bulletin 15-NA-087 context to diagnose the stored code. The supplied evidence does not provide further test steps.
11. When to contact service
Service need is not established by the supplied evidence. If U0285 is stored or communication-related warnings are present, contact a Cadillac dealer or qualified service provider for diagnosis.
12. What the service center may check
- Confirm whether U0285 is stored.
- Review applicable Cadillac service information and NHTSA manufacturer communication 15-NA-087.
- Further specific checks are not established by verified evidence.
13. Possible repair or resolution
- Not yet established by verified evidence.
14. Affected vehicles
- Cadillac CT6 · 2017–2018 · US
15. Related TSBs / service bulletins
- Cadillac/NHTSA manufacturer communication 15-NA-087, published October 25, 2022 (NHTSA document MC-10225708-0001), lists U0285 as “Lost Communication with Active Grille Air Shutter 2 Motor Module.” The supplied excerpt does not establish the bulletin’s complete repair guidance or applicability beyond the provided diagnostic applicability.
16. Recall information
- Not yet established by verified evidence.
17. Official manufacturer information
Verified source: NHTSA Manufacturer Communication PDF 10225708, Cadillac bulletin 15-NA-087: https://static.nhtsa.gov/odi/tsbs/2022/MC-10225708-0001.pdf
19. Frequently asked questions
What does U0285 mean on the applicable Cadillac CT6?
The verified manufacturer communication identifies U0285 as “Lost Communication with Active Grille Air Shutter 2 Motor Module.”
Which vehicles are established as applicable by the supplied evidence?
Cadillac CT6, model years 2017–2018, US region.
Is it safe to drive or charge with U0285?
Not yet established by verified evidence.
Does the evidence identify the required repair?
No. A specific repair is not yet established by verified evidence.