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Nissan P31E7

Ion battery module triggered the DTCs.  If a Li-Ion battery module did not trigger the DTCs, this bulletin

DriveNot yet established by verified evidence.
ChargeNot yet established by verified evidence.
ServiceService is recommended because Nissan’s official bulletin specifies a diagnostic procedure for P31E7. Urgency is not established by the supplied evidence.
Confidence95%

Quick answer

For 2019–2022 Nissan LEAF vehicles in the U.S., Nissan bulletin NTB23-024 applies when DTC P31E7 is stored in the EV/HEV Control Module. The bulletin directs technicians to perform ESM diagnosis to determine whether a Li-ion battery module triggered the DTC.

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 P31E7 mean?

For 2019–2022 Nissan LEAF vehicles in the U.S., Nissan bulletin NTB23-024 applies when DTC P31E7 is stored in the EV/HEV Control Module. The bulletin directs technicians to perform ESM diagnosis to determine whether a Li-ion battery module triggered the DTC.

2. Technical explanation

Verified evidence identifies P31E7 in Nissan bulletin NTB23-024. The supplied bulletin excerpt states that P31E7 or P0AA6 may be stored in the EV/HEV Control Module and instructs service personnel to perform ESM diagnosis to determine whether a Li-ion battery module triggered the DTC. The supplied canonical title/meaning text is incomplete or corrupted, so a complete plain-language definition of P31E7 is not yet established by verified evidence.

3. What system is affected?

EV/HEV Control Module; the bulletin’s diagnostic process evaluates whether a Li-ion battery module triggered the DTC.

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

  • A Li-ion battery module may have triggered P31E7; Nissan directs ESM diagnosis to determine this.
  • Other causes are not yet established by verified 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 facility.
  • Do not attempt high-voltage battery-module diagnosis or repair yourself.

10. Step-by-step troubleshooting

  1. Have a technician check whether P31E7 is stored in the EV/HEV Control Module.
  2. Follow Nissan NTB23-024 and perform the specified ESM diagnosis to determine whether a Li-ion battery module triggered the DTC.

11. When to contact service

Service is recommended because Nissan’s official bulletin specifies a diagnostic procedure for P31E7. Urgency is not established by the supplied evidence.

12. What the service center may check

  • Confirm DTC P31E7 in the EV/HEV Control Module.
  • Perform ESM diagnosis as directed by Nissan NTB23-024.
  • Determine whether a Li-ion battery module triggered the DTC.

13. Possible repair or resolution

  • The supplied evidence does not provide the repair outcome or repair steps after diagnosis.
  • Do not infer battery replacement, module replacement, or other repair from the available excerpt.

14. Affected vehicles

15. Related TSBs / service bulletins

  • Nissan NTB23-024, published March 14, 2023; NHTSA Manufacturer Communication 10234086. It applies to U.S. 2019–2022 Nissan LEAF vehicles according to the supplied applicability data.

16. Recall information

No recall relationship is established by verified evidence.

17. Official manufacturer information

Official source: NHTSA Manufacturer Communication 10234086, Nissan bulletin NTB23-024: https://static.nhtsa.gov/odi/ffdd/tsbs/TSBS_RECEIVED_2020-2024.zip#nhtsa_id=10234086

19. Frequently asked questions

What does Nissan P31E7 mean?

The supplied official evidence does not establish a complete definition. It confirms that P31E7 may be stored in the EV/HEV Control Module and that Nissan directs ESM diagnosis to determine whether a Li-ion battery module triggered it.

Which Nissan vehicles does NTB23-024 apply to?

The supplied applicability data identifies U.S. Nissan LEAF model years 2019 through 2022.

Is P31E7 related to another code in this bulletin?

Yes. The supplied excerpt names P0AA6 alongside P31E7 for the specified ESM diagnostic process.

20. Sources & verification

Verified
Nissan P31E7: Ion battery module triggered the DTCs.  If a Li-Ion… | EV Diagnostics