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Cadillac C0000

Cannot relearn TPM • Specific to Hybrids: – Reduced propulsion power message. – Service high voltage charging system message. Cause If nothing else can be identified as the root ca

DriveUnknown. The supplied diagnostic record does not establish whether the vehicle is safe to drive.
ChargeUnknown. The supplied diagnostic record does not establish whether the vehicle is safe to charge.
ServiceService is recommended for diagnosis because the bulletin calls for normal SI diagnostics and may involve hybrid high-voltage charging-system messaging. The record does not state whether service is mandatory.
Confidence95%

Quick answer

C0000 is listed in Cadillac bulletin 13-08-116-001 (revisions C through I) as a code that may appear with erratic electric power-steering boost. The bulletin also lists inability to relearn the tire-pressure-monitoring system (TPM), and hybrid-specific reduced-propulsion-power and service high-voltage-charging-system messages among possible concerns. A vehicle-specific root cause is not established by the supplied evidence.

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 C0000 mean?

C0000 is listed in Cadillac bulletin 13-08-116-001 (revisions C through I) as a code that may appear with erratic electric power-steering boost. The bulletin also lists inability to relearn the tire-pressure-monitoring system (TPM), and hybrid-specific reduced-propulsion-power and service high-voltage-charging-system messages among possible concerns. A vehicle-specific root cause is not established by the supplied evidence.

2. Technical explanation

The supplied official NHTSA-hosted Cadillac manufacturer communications identify C0000 in a broader diagnostic bulletin concerning potential symptoms and diagnostic review. The bulletin instructs technicians to perform normal diagnostics in Service Information (SI) first; if no other root cause is found, it directs them to check for a device plugged into the vehicle. The supplied excerpt does not establish the exact device type, its location, a specific repair procedure, or that every occurrence of C0000 has this cause.

3. What system is affected?

System name is not provided in the diagnostic record. Verified bulletin content associates C0000 with erratic electric power-steering boost; it also separately lists TPM relearn concerns and, for hybrids, reduced-propulsion-power and service-high-voltage-charging-system messages.

4. How serious is this code?

Unknown. The supplied diagnostic record does not assign a severity.

5. Symptoms you may notice

  • Erratic electric power-steering boost may be associated with C0000.
  • Service Tire Pressure Monitoring (TPM) system light illuminated.
  • Cannot relearn TPM.
  • For hybrids: reduced propulsion power message.
  • For hybrids: service high voltage charging system message.

6. Possible causes

  • After normal SI diagnostics do not identify another root cause, the bulletin directs technicians to check for a device plugged into the vehicle.
  • Any more specific cause is not yet established by verified evidence.

7. Can I still drive the vehicle?

Unknown. The supplied diagnostic record does not establish whether the vehicle is safe to drive.

8. Can I charge the vehicle?

Unknown. The supplied diagnostic record does not establish whether the vehicle is safe to charge.

9. What you can safely do

  • Have normal diagnostics performed using Cadillac Service Information (SI).
  • If a reduced propulsion power or service high voltage charging system message is present, seek qualified service; the supplied evidence does not establish a safe operating or charging status.
  • Do not attempt high-voltage system repair based on this information.

10. Step-by-step troubleshooting

  1. A qualified technician should first carry out normal diagnostics in SI.
  2. If those diagnostics identify no other root cause, the referenced Cadillac bulletin directs the technician to check for a device plugged into the vehicle.
  3. The supplied evidence does not provide further verified troubleshooting steps.

11. When to contact service

Service is recommended for diagnosis because the bulletin calls for normal SI diagnostics and may involve hybrid high-voltage charging-system messaging. The record does not state whether service is mandatory.

12. What the service center may check

  • Perform normal diagnostics using Cadillac SI.
  • If no other root cause is identified, check for a device plugged into the vehicle, as directed by bulletin 13-08-116-001.

13. Possible repair or resolution

  • No specific repair or resolution is established by the supplied verified evidence.
  • The bulletin excerpt supports diagnostic inspection for a plugged-in device only after normal SI diagnostics do not identify another root cause.

14. Affected vehicles

15. Related TSBs / service bulletins

  • Cadillac bulletin 13-08-116-001I, published June 29, 2023; NHTSA communication MC-10239102-0001: https://static.nhtsa.gov/odi/tsbs/2023/MC-10239102-0001.pdf
  • Cadillac bulletin 13-08-116-001H, published September 16, 2022; NHTSA communication MC-10222776-0001: https://static.nhtsa.gov/odi/tsbs/2022/MC-10222776-0001.pdf
  • Cadillac bulletin 13-08-116-001G, published January 4, 2022; NHTSA communication MC-10213767-9999: https://static.nhtsa.gov/odi/tsbs/2022/MC-10213767-9999.pdf
  • Cadillac bulletin 13-08-116-001F, published October 23, 2020; NHTSA communication MC-10183782-9999: https://static.nhtsa.gov/odi/tsbs/2020/MC-10183782-9999.pdf
  • Cadillac bulletin 13-08-116-001E, published June 26, 2019; NHTSA communication MC-10163272-9999: https://static.nhtsa.gov/odi/tsbs/2019/MC-10163272-9999.pdf
  • Cadillac bulletin 13-08-116-001C, published August 30, 2017; NHTSA communication MC-10140298-9999: https://static.nhtsa.gov/odi/tsbs/2017/MC-10140298-9999.pdf

16. Recall information

  • Not yet established by verified evidence.

17. Official manufacturer information

Verified applicability entries identify U.S.-market Cadillac CT6 (2014–2018 and 2014–2023), ELR (2014–2016, 2014–2018, and 2014–2023), and LYRIQ (2014–2023). These overlapping ranges are reproduced from the supplied database and do not independently establish that every listed vehicle is affected by this bulletin or condition.

19. Frequently asked questions

What does C0000 mean here?

The diagnostic title records “Cannot relearn TPM.” The official bulletin excerpt also lists C0000 among codes potentially associated with erratic electric power-steering boost. A single definitive vehicle-specific meaning is not established by the supplied evidence.

Can C0000 be related to a hybrid charging warning?

The bulletin lists “Service high voltage charging system message” and “Reduced propulsion power message” as hybrid-specific concerns in the same bulletin. It does not establish that C0000 alone causes either message.

Does this bulletin identify a repair?

No specific repair is established in the supplied excerpt. It directs normal SI diagnostics first and, if no other root cause is identified, checking for a device plugged into the vehicle.

20. Sources & verification

Verified
Cadillac C0000: Cannot relearn TPM • Specific to Hybrids: – Reduced… | EV Diagnostics