Cadillac U023C
Created. 05/24/2023
Quick answer
For a 2023 Cadillac LYRIQ in the US, DTC U023C is listed in Cadillac bulletin PIC6500B. The bulletin directs technicians to refer to normal Service Information (SI) diagnostics if U023C symptom 00 sets.
This page separates verified manufacturer/regulator evidence from supporting material. Unsupported causes, repairs or safety conclusions are not guessed.
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1. What does U023C mean?
For a 2023 Cadillac LYRIQ in the US, DTC U023C is listed in Cadillac bulletin PIC6500B. The bulletin directs technicians to refer to normal Service Information (SI) diagnostics if U023C symptom 00 sets.
2. Technical explanation
The supplied verified evidence does not provide a decoded fault definition for U023C beyond its inclusion in an official Cadillac/NHTSA manufacturer communication. The diagnostic record’s displayed title and meaning, “Created. 05/24/2023,” do not establish a technical definition of the code. PIC6500B lists U023C with symptom 00 and states that if any listed DTC sets, normal SI diagnostics should be followed.
3. What system is affected?
Not yet established by verified evidence.
4. How serious is this code?
Unknown. The supplied evidence does not assign a severity level.
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?
Unknown. The supplied verified evidence does not establish whether the vehicle is safe to drive with U023C.
8. Can I charge the vehicle?
Unknown. The supplied verified evidence does not establish whether the vehicle is safe to charge with U023C.
9. What you can safely do
- Have the vehicle evaluated using Cadillac normal Service Information diagnostics, as directed by bulletin PIC6500B.
- Do not attempt high-voltage system repairs without qualified EV service training and appropriate procedures.
10. Step-by-step troubleshooting
- Confirm the stored DTC and whether it is U023C symptom 00.
- Refer to normal Cadillac Service Information diagnostics, consistent with PIC6500B.
11. When to contact service
Service is appropriate because Cadillac bulletin PIC6500B directs technicians to use normal SI diagnostics when U023C symptom 00 sets. The supplied evidence does not establish urgency or drivability restrictions.
12. What the service center may check
- Verify U023C symptom 00 is present.
- Follow normal Cadillac Service Information diagnostics for the code, as directed in PIC6500B.
13. Possible repair or resolution
- Not yet established by verified evidence. The supplied bulletin excerpt provides a diagnostic direction but does not identify a specific repair.
14. Affected vehicles
- Cadillac LYRIQ · 2023 · US
15. Related TSBs / service bulletins
- Cadillac PIC6500B, published by NHTSA as Manufacturer Communication PDF 11007683 on 2024-09-11. It lists U023C symptom 00 and directs normal SI diagnostics if the listed DTCs set.
16. Recall information
- Not yet established by verified evidence.
17. Official manufacturer information
Official source: NHTSA Manufacturer Communication PDF 11007683, Cadillac PIC6500B: https://static.nhtsa.gov/odi/tsbs/2024/MC-11007683-0001.pdf
19. Frequently asked questions
What does U023C mean on a 2023 Cadillac LYRIQ?
The supplied verified evidence does not provide a technical definition for U023C. It confirms that U023C symptom 00 is listed in Cadillac bulletin PIC6500B.
What should a technician do when U023C symptom 00 is set?
PIC6500B directs technicians to refer to normal Service Information diagnostics.
Does U023C mean the LYRIQ is unsafe to drive or charge?
Not yet established by verified evidence.