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Nissan B2774

III plus (C-III plus). 2. Replace the PTC heater. Please see this bulletin fo

DriveNot yet established by verified evidence.
ChargeNot yet established by verified evidence.
ServiceService is recommended because the verified Nissan bulletin specifies VCM reprogramming and PTC-heater replacement. The supplied evidence does not state whether immediate service is required.
Confidence95%

Quick answer

For a 2013–2014 Nissan Leaf in the US, DTC B2774 is identified in Nissan bulletin NTB14-001C as “PTC Heater Circuit 2.” The bulletin’s stated 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 B2774 mean?

For a 2013–2014 Nissan Leaf in the US, DTC B2774 is identified in Nissan bulletin NTB14-001C as “PTC Heater Circuit 2.” The bulletin’s stated action is to reprogram the VCM with CONSULT-III plus and replace the PTC heater.

2. Technical explanation

Verified NHTSA-hosted Nissan manufacturer communication NTB14-001C lists B2774 as PTC Heater Circuit 2. The communication states that one or more listed DTCs, including B2774, may be present and directs technicians to check the current EV/HEV software version. Its specified actions are VCM reprogramming using CONSULT-III plus (C-III plus) and PTC-heater replacement.

3. What system is affected?

PTC heater circuit 2; the supplied verified evidence does not further establish the affected vehicle system name.

4. How serious is this code?

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

5. Symptoms you may notice

  • A stored B2774 DTC may be present. No driver-observable symptoms are established by the supplied verified evidence.

6. Possible causes

  • The verified bulletin identifies B2774 as PTC Heater Circuit 2. A specific underlying failure cause is not further established by the supplied evidence.

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

  • Arrange diagnosis by a Nissan dealer or qualified EV service provider.
  • Provide the technician with DTC B2774 and reference Nissan bulletin NTB14-001C.
  • Do not attempt high-voltage or PTC-heater repair procedures yourself.

10. Step-by-step troubleshooting

  1. Have a qualified technician check the current EV/HEV software version, as stated in Nissan bulletin NTB14-001C.
  2. Have the technician evaluate the vehicle using CONSULT-III plus (C-III plus).

11. When to contact service

Service is recommended because the verified Nissan bulletin specifies VCM reprogramming and PTC-heater replacement. The supplied evidence does not state whether immediate service is required.

12. What the service center may check

  • Check the current EV/HEV software version.
  • Use CONSULT-III plus (C-III plus) for the VCM reprogramming specified by the bulletin.
  • Confirm whether the PTC heater requires replacement under the bulletin procedure.

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 through NHTSA Manufacturer Communication 10192534, published March 11, 2015. It lists B2774 as PTC Heater Circuit 2 and states actions of VCM reprogramming and PTC-heater replacement.

16. Recall information

  • Not yet established by verified evidence.

17. Official manufacturer information

Official source: 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 Nissan Leaf code B2774 mean?

For the verified 2013–2014 US Nissan Leaf applicability, Nissan bulletin NTB14-001C identifies B2774 as PTC Heater Circuit 2.

What repair does the Nissan bulletin specify for B2774?

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

Can I drive or charge with B2774?

Not yet established by verified evidence.

Which vehicles are covered by the supplied evidence?

The supplied applicability evidence is for Nissan Leaf model years 2013–2014 in the United States.

20. Sources & verification

Verified
Nissan B2774: III plus (C-III plus). 2. Replace the PTC heater. Please… | EV Diagnostics