Cadillac U023B
Created
Quick answer
U023B is a Cadillac diagnostic trouble code documented for certain U.S. Cadillac LYRIQ vehicles. Verified evidence identifies it in GM service communications as U023B symptom 00; the supplied database does not establish a consumer-facing fault description beyond the diagnostic record’s meaning, “Created.”
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 U023B mean?
U023B is a Cadillac diagnostic trouble code documented for certain U.S. Cadillac LYRIQ vehicles. Verified evidence identifies it in GM service communications as U023B symptom 00; the supplied database does not establish a consumer-facing fault description beyond the diagnostic record’s meaning, “Created.”
2. Technical explanation
Official GM/NHTSA service communications list U023B symptom 00 among DTCs that may be found in the K124 Image Processing Module (IPCM) or stored as recent history. A separate GM communication states that when U023B symptom 00 is set, technicians should refer to normal Service Information (SI) diagnostics. The supplied evidence does not establish the underlying failure mechanism, a specific component fault, or a definitive repair.
3. What system is affected?
Verified evidence associates U023B symptom 00 with the K124 Image Processing Module (IPCM) in one GM bulletin. No broader system description is established by the supplied evidence.
4. How serious is this code?
Unknown. The diagnostic record marks severity as unknown.
5. Symptoms you may notice
- A GM bulletin states that U023B symptom 00 may be found in the K124 Image Processing Module (IPCM) or in recent history.
- No driver-observable symptoms are established by the supplied verified evidence.
6. Possible causes
- Not yet established by verified evidence. The supplied GM communications direct technicians to normal Service Information diagnostics for U023B symptom 00 but do not establish a root cause in the provided evidence.
7. Can I still drive the vehicle?
Unknown. The diagnostic record marks safe-to-drive status as unknown.
8. Can I charge the vehicle?
Unknown. The diagnostic record marks safe-to-charge status as unknown.
9. What you can safely do
- Record any warning messages and the conditions under which they occur.
- Arrange diagnosis by a qualified Cadillac/GM service provider if the code is present or warnings recur.
- Do not attempt high-voltage or module repair based on this code alone.
10. Step-by-step troubleshooting
- A qualified technician should follow normal GM Service Information diagnostics for U023B symptom 00, as directed by GM communication PIC6500B.
- GM bulletin 25-NA-060 identifies that technicians may find U023B symptom 00 in the K124 Image Processing Module (IPCM) or in recent history; the supplied evidence does not provide further diagnostic steps.
11. When to contact service
Service is not explicitly marked as required in the diagnostic record; its status is unknown. However, GM’s provided communication directs technicians to normal Service Information diagnostics when U023B symptom 00 sets.
12. What the service center may check
- Retrieve diagnostic trouble codes and identify whether U023B symptom 00 is current or recent history.
- Evaluate U023B symptom 00 using normal GM Service Information diagnostics.
- Consider the K124 Image Processing Module (IPCM) association described in GM bulletin 25-NA-060.
13. Possible repair or resolution
- Not yet established by verified evidence. No specific repair, programming action, replacement part, or resolution is provided in the supplied evidence.
14. Affected vehicles
- Cadillac LYRIQ · 2023 · US
- Cadillac LYRIQ · 2025 · US
15. Related TSBs / service bulletins
- GM Bulletin 25-NA-060, published March 11, 2025: states that technicians may find U023B symptom 00, among other DTCs, in the K124 Image Processing Module (IPCM) or in recent history after an ignition cycle. Source: NHTSA Manufacturer Communication PDF 11017004.
- GM PIC6500B, published September 11, 2024: lists U023B symptom 00 and directs technicians to refer to normal Service Information diagnostics when listed DTCs set. Source: NHTSA Manufacturer Communication PDF 11007683.
16. Recall information
- No recall information is established by the supplied verified evidence.
17. Official manufacturer information
Verified official sources: NHTSA-hosted GM manufacturer communications 25-NA-060 (https://static.nhtsa.gov/odi/tsbs/2025/MC-11017004-0001.pdf) and PIC6500B (https://static.nhtsa.gov/odi/tsbs/2024/MC-11007683-0001.pdf).
19. Frequently asked questions
What does U023B mean on a Cadillac LYRIQ?
The supplied diagnostic record labels U023B as “Created.” GM communications specifically identify U023B symptom 00, but the supplied evidence does not establish a more detailed consumer-facing definition.
Which vehicles are covered by the verified applicability data?
The supplied applicability data covers U.S.-market Cadillac LYRIQ model years 2023 and 2025.
Is U023B linked to the Image Processing Module?
GM bulletin 25-NA-060 states that technicians may find U023B symptom 00 in the K124 Image Processing Module (IPCM) or in recent history. This does not by itself establish that the module is defective.
Can I drive or charge with U023B?
Not yet established by verified evidence. The diagnostic record marks both safe-to-drive and safe-to-charge status as unknown.