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Nissan B2773

III plus (C-III plus). 2. Replace the PTC heater

DriveUnknown. The supplied verified evidence does not state whether the vehicle is safe to drive with B2773.
ChargeUnknown. The supplied verified evidence does not state whether charging is safe or unavailable with B2773.
ServiceService is appropriate because the verified bulletin specifies VCM reprogramming with CONSULT-III plus and PTC-heater replacement. The supplied evidence does not establish urgency or driving restrictions.
Confidence95%

Quick answer

For a 2013–2014 Nissan Leaf in the US, DTC B2773 is identified in Nissan bulletin NTB14-001C as “PTC Heater Circuit 1.” The bulletin’s listed action is to reprogram the VCM with CONSULT-III plus and replace the PTC heater.

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 B2773 mean?

For a 2013–2014 Nissan Leaf in the US, DTC B2773 is identified in Nissan bulletin NTB14-001C as “PTC Heater Circuit 1.” The bulletin’s listed action is to reprogram the VCM with CONSULT-III plus and replace the PTC heater.

2. Technical explanation

The verified Nissan/NHTSA bulletin evidence lists B2773 as PTC Heater Circuit 1. It states that one or more listed DTCs may be present and gives this action: (1) reprogram the VCM with CONSULT-III plus (C-III plus), and (2) replace the PTC heater. The supplied evidence does not establish a more specific electrical failure mode, diagnostic threshold, or component-level root cause.

3. What system is affected?

PTC heater circuit / PTC heater; the supplied diagnostic record does not provide a broader system name.

4. How serious is this code?

Unknown. The supplied verified evidence does not assign a severity level.

5. Symptoms you may notice

  • Not yet established by verified evidence.

6. Possible causes

  • The verified evidence identifies B2773 as PTC Heater Circuit 1.
  • A specific underlying cause is not yet established by verified evidence.

7. Can I still drive the vehicle?

Unknown. The supplied verified evidence does not state whether the vehicle is safe to drive with B2773.

8. Can I charge the vehicle?

Unknown. The supplied verified evidence does not state whether charging is safe or unavailable with B2773.

9. What you can safely do

  • Arrange diagnosis by a Nissan dealer or qualified EV service facility.
  • Provide the technician with DTC B2773 and Nissan bulletin NTB14-001C.
  • Do not attempt high-voltage PTC-heater diagnosis or repair yourself.

10. Step-by-step troubleshooting

  1. Have a qualified technician check the current EV/HEV software version using CONSULT-III plus, as referenced in the bulletin service procedure.
  2. Have the technician follow the bulletin action: reprogram the VCM with CONSULT-III plus and replace the PTC heater.

11. When to contact service

Service is appropriate because the verified bulletin specifies VCM reprogramming with CONSULT-III plus and PTC-heater replacement. The supplied evidence does not establish urgency or driving restrictions.

12. What the service center may check

  • Check the current EV/HEV software version using CONSULT-III plus, as referenced by the bulletin.
  • Confirm the presence of B2773, identified by the bulletin as PTC Heater Circuit 1.
  • Perform the bulletin-listed VCM reprogramming with CONSULT-III plus.
  • Replace the PTC heater, as specified by the bulletin.

13. Possible repair or resolution

  • Reprogram the VCM with CONSULT-III plus (C-III plus).
  • Replace the PTC heater.

14. Affected vehicles

15. Related TSBs / service bulletins

  • Nissan NTB14-001C, reported by NHTSA as Manufacturer Communication 10192534, published March 11, 2015. For the applicable 2013–2014 US Nissan Leaf, the supplied summary identifies B2773 as PTC Heater Circuit 1 and lists VCM reprogramming plus PTC-heater replacement.

16. Recall information

  • Not yet established by verified evidence.

17. Official manufacturer information

Official source supplied: NHTSA Manufacturer Communication 10192534, Nissan bulletin NTB14-001C: https://static.nhtsa.gov/odi/ffdd/tsbs/TSBS_RECEIVED_2015-2019.zip#nhtsa_id=10192534

19. Frequently asked questions

What does B2773 mean on an applicable Nissan Leaf?

Nissan bulletin NTB14-001C identifies B2773 as PTC Heater Circuit 1.

Which vehicles are supported by the supplied evidence?

The supplied applicability data covers US-market 2013–2014 Nissan Leaf vehicles.

What repair does the bulletin list?

The bulletin lists reprogramming the VCM with CONSULT-III plus and replacing the PTC heater.

Can I drive or charge with B2773?

Not yet established by verified evidence.

20. Sources & verification

Verified
Nissan B2773: III plus (C-III plus). 2. Replace the PTC heater | EV Diagnostics