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Jeep U0020

(Can B BUS Off Performance), B2206-87-(Current VIN Missing), and/or B2582-23-(Roof Open Close Switch-Signal Stuck Low), please proceed w

DriveUnknown. The supplied evidence does not establish whether the vehicle can be driven with these stored DTCs.
ChargeUnknown. The supplied evidence does not establish whether the vehicle can be charged with these stored DTCs.
ServiceContact an authorized Jeep service provider if WiTech reports these stored DTCs or if they return after a sleep cycle. The supplied communication directs technicians to proceed with further diagnosis, but that procedure is not present in the available excerpt.
Confidence95%

Quick answer

For a 2026 Jeep Recon in the US, NHTSA manufacturer communication S2623000045 documents stored DTC U0020-00, B2206-87, and/or B2582-23 that can reappear as stored after a sleep cycle even after being cleared. The supplied evidence does not establish a component failure, driving/charging status, or a specific repair.

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 U0020 mean?

For a 2026 Jeep Recon in the US, NHTSA manufacturer communication S2623000045 documents stored DTC U0020-00, B2206-87, and/or B2582-23 that can reappear as stored after a sleep cycle even after being cleared. The supplied evidence does not establish a component failure, driving/charging status, or a specific repair.

2. Technical explanation

Verified evidence from NHTSA manufacturer communication PDF 11034349 (S2623000045), published June 17, 2026, states that WiTech may show stored U0020-00 (CAN B Bus Off Performance), B2206-87 (Current VIN Missing), and/or B2582-23 (Roof Open Close Switch—Signal Stuck Low). It further states that, even when cleared, the DTCs will show back up as stored after a sleep cycle. The supplied excerpt ends before the referenced diagnostic procedure, so the underlying cause and prescribed resolution are not established by the available evidence.

3. What system is affected?

U0020-00 is identified in the supplied manufacturer communication as “CAN B Bus Off Performance.” B2206-87 is identified as “Current VIN Missing,” and B2582-23 as “Roof Open Close Switch—Signal Stuck Low.” No further system attribution is established by verified evidence.

4. How serious is this code?

Unknown. The diagnostic record lists severity as unknown.

5. Symptoms you may notice

  • Stored U0020-00, B2206-87, and/or B2582-23 may be displayed in WiTech.
  • After the DTCs are cleared, they may reappear as stored following a vehicle sleep cycle.

6. Possible causes

  • Not yet established by verified evidence.

7. Can I still drive the vehicle?

Unknown. The supplied evidence does not establish whether the vehicle can be driven with these stored DTCs.

8. Can I charge the vehicle?

Unknown. The supplied evidence does not establish whether the vehicle can be charged with these stored DTCs.

9. What you can safely do

  • Have a qualified Jeep service provider inspect the vehicle using WiTech.
  • Record the exact DTCs and whether they return as stored after a sleep cycle.
  • Do not attempt high-voltage or network-system repairs based on this information.

10. Step-by-step troubleshooting

  1. Use WiTech to identify whether stored U0020-00, B2206-87, and/or B2582-23 are present.
  2. If the DTCs are cleared, verify whether they return as stored after a sleep cycle, as described in the manufacturer communication.
  3. The remaining diagnostic procedure is not included in the supplied verified evidence.

11. When to contact service

Contact an authorized Jeep service provider if WiTech reports these stored DTCs or if they return after a sleep cycle. The supplied communication directs technicians to proceed with further diagnosis, but that procedure is not present in the available excerpt.

12. What the service center may check

  • Check for stored U0020-00 (CAN B Bus Off Performance).
  • Check for stored B2206-87 (Current VIN Missing).
  • Check for stored B2582-23 (Roof Open Close Switch—Signal Stuck Low).
  • Confirm whether cleared DTCs return as stored after a sleep cycle.

13. Possible repair or resolution

  • Not yet established by verified evidence. The supplied source excerpt does not include the repair or final resolution.

14. Affected vehicles

15. Related TSBs / service bulletins

  • NHTSA Manufacturer Communication PDF 11034349: S2623000045, published June 17, 2026. It applies in the supplied applicability data to the 2026 Jeep Recon in the US and describes stored U0020-00, B2206-87, and/or B2582-23 that can return as stored after a sleep cycle.

16. Recall information

  • Not yet established by verified evidence. No recall information was supplied.

17. Official manufacturer information

Official source: NHTSA Manufacturer Communication PDF 11034349, S2623000045: https://static.nhtsa.gov/odi/tsbs/2026/MC-11034349-0001.pdf

19. Frequently asked questions

What does U0020 mean in the supplied Jeep communication?

It is listed as U0020-00, “CAN B Bus Off Performance.”

Can these codes return after being cleared?

Yes. The supplied manufacturer communication states that the listed DTCs can show back up as stored after a sleep cycle even when cleared.

Which vehicle is covered by the supplied applicability data?

The supplied data identifies a 2026 Jeep Recon in the US.

Does this evidence identify the failed part or repair?

No. The cause and repair are not yet established by the supplied verified evidence.

20. Sources & verification

ReferenceVerified
Jeep U0020: (Can B BUS Off Performance), B2206-87-(Current VIN… | EV Diagnostics