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Mercedes-Benz P1D0B00

As a consequence, on vehicles with BMS30EB02, the DTC for the auxiliary assembly fuse P0E2F00 can be set. This triggers the yellow HV drive system warning message. In the ignition

DriveNot yet established by verified evidence.
ChargeNot yet established by verified evidence.
ServiceContact an authorized Mercedes-Benz service provider for diagnosis, particularly if a red 12 V fault, red HV warning, or yellow HV drive system warning message is displayed.
Confidence95%

Quick answer

P1D0B00 is listed in Mercedes-Benz bulletin LI54.10-P-079533 as a possible additional DC/DC-converter-related DTC. The bulletin identifies incorrect wake-up behavior of the DC/DC converter as the cause of the described condition.

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 P1D0B00 mean?

P1D0B00 is listed in Mercedes-Benz bulletin LI54.10-P-079533 as a possible additional DC/DC-converter-related DTC. The bulletin identifies incorrect wake-up behavior of the DC/DC converter as the cause of the described condition.

2. Technical explanation

The official Mercedes-Benz communications describe a condition in which the DC/DC converter may store DTC group(s), including P1D0B00, P1CA000, and U011500. Not every DTC in a group is necessarily stored. The communications state that DC/DC DTCs and warning messages may appear with a time delay. On vehicles with BMS30EB02, auxiliary-assembly-fuse DTC P0E2F00 may also be set, triggering the yellow HV drive system warning message. The stated cause is incorrect wake-up behavior of the DC/DC converter.

3. What system is affected?

DC/DC converter; the bulletin also references the 12 V fault message, HV warning messages, and—on vehicles with BMS30EB02—the auxiliary assembly fuse DTC P0E2F00.

4. How serious is this code?

Not yet established by verified evidence. The supplied official bulletin does describe possible red HV warning, yellow HV drive system warning, and red 12 V fault messages.

5. Symptoms you may notice

  • P1D0B00 may be stored by the DC/DC converter.
  • A yellow HV drive system warning message may be displayed.
  • A red HV warning message may be displayed.
  • A red 12 V fault message may be displayed.
  • DTCs and warning messages may appear with a time delay.
  • If initial warning messages are ignored in the same ignition cycle, additional warnings may be shown.

6. Possible causes

  • Incorrect wake-up behavior of the DC/DC converter.

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

  • Do not ignore displayed warning messages.
  • Arrange diagnosis by an authorized Mercedes-Benz service provider.
  • Do not attempt high-voltage or DC/DC-converter repair procedures yourself.

10. Step-by-step troubleshooting

  1. Have the DC/DC converter checked for stored DTCs, including the fault-code groups identified in Mercedes-Benz bulletin LI54.10-P-079533.
  2. Have the service provider assess whether the vehicle is affected by the bulletin condition and follow the applicable Mercedes-Benz procedure.

11. When to contact service

Contact an authorized Mercedes-Benz service provider for diagnosis, particularly if a red 12 V fault, red HV warning, or yellow HV drive system warning message is displayed.

12. What the service center may check

  • Read stored DC/DC converter fault codes.
  • Check for combinations of P0C3B00, P0E9700, P0E5400, and P0C4000.
  • Check for combinations of P1D0B00, P1CA000, and U011500.
  • For vehicles with BMS30EB02, check whether P0E2F00 is stored.
  • Assess the DC/DC converter wake-up behavior under the applicable Mercedes-Benz bulletin.

13. Possible repair or resolution

  • Not yet established by verified evidence. The supplied bulletin evidence identifies the condition and its stated cause, but does not provide the complete repair procedure.

14. Affected vehicles

15. Related TSBs / service bulletins

  • Mercedes-Benz LI54.10-P-079533, reported through NHTSA Manufacturer Communications 11021800, 11021970, 11023154, 11028815, and 11029977. The bulletin describes DC/DC converter incorrect wake-up behavior and includes P1D0B00 among possible associated DTCs.

16. Recall information

  • Not yet established by verified evidence.

17. Official manufacturer information

Verified official source: NHTSA Manufacturer Communication records for Mercedes-Benz bulletin LI54.10-P-079533: https://static.nhtsa.gov/odi/ffdd/tsbs/TSBS_RECEIVED_2025-2026.zip#nhtsa_id=11021800

19. Frequently asked questions

What does P1D0B00 indicate in the supplied Mercedes-Benz evidence?

It is listed as a DTC that may be stored by the DC/DC converter as part of the condition described in bulletin LI54.10-P-079533.

What cause does the bulletin identify?

The bulletin identifies incorrect wake-up behavior of the DC/DC converter.

Can P1D0B00 occur by itself?

The supplied bulletin states that P1D0B00, P1CA000, and U011500 may be triggered additionally or, in rare cases, without the other listed DC/DC DTCs. It also states that not all DTCs in a group are necessarily triggered.

Which vehicles are supported by the supplied applicability evidence?

Mercedes-Benz EQB and G-Class vehicles, model years 2022 through 2025, in the United States.

20. Sources & verification

Verified
Mercedes-Benz P1D0B00: As a consequence, on vehicles with BMS30EB02,… | EV Diagnostics