Chevrolet P305E
Removed Holden Equinox, added Descriptors to the DTCs, inserted an Important that states the Battery Monitor Module may also be called the Battery Sensor Module and the Battery Mon
Quick answer
P305E is documented in Chevrolet service bulletin 15-NA-087. For U.S. 2021–2023 Chevrolet Bolt EV and Bolt EUV, the supplied evidence links the code to bulletin revisions involving the Battery Monitor Module, also called the Battery Sensor Module or Battery Monitor Sensor.
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 P305E mean?
P305E is documented in Chevrolet service bulletin 15-NA-087. For U.S. 2021–2023 Chevrolet Bolt EV and Bolt EUV, the supplied evidence links the code to bulletin revisions involving the Battery Monitor Module, also called the Battery Sensor Module or Battery Monitor Sensor.
2. Technical explanation
The supplied official NHTSA-hosted manufacturer communication identifies P305E as one of the DTCs added to Chevrolet bulletin 15-NA-087. A February 13, 2019 revision added DTC descriptors and stated that the Battery Monitor Module may also be called the Battery Sensor Module and Battery Monitor Sensor. The supplied excerpt does not include the actual P305E descriptor, diagnostic criteria, or repair procedure.
3. What system is affected?
Battery Monitor Module / Battery Sensor Module / Battery Monitor Sensor terminology is referenced by the bulletin. The exact affected system for P305E is not yet established by the supplied verified evidence.
4. How serious is this code?
Not yet established by verified evidence.
5. Symptoms you may notice
Not yet established by verified evidence.
6. Possible causes
Not yet established by verified evidence. A diagnostic identifier alone is not proof that a specific component has failed.
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
- Record the DTC and any accompanying messages or symptoms for a qualified Chevrolet service provider.
- Use the vehicle owner information and normal warning-message guidance. Do not attempt high-voltage or battery-monitoring-system repairs yourself.
10. Step-by-step troubleshooting
- Confirm the vehicle is a U.S. 2021–2023 Chevrolet Bolt EV or Bolt EUV.
- Have a qualified service provider consult Chevrolet bulletin 15-NA-087 and current OEM diagnostic information.
- The supplied evidence does not establish a step-by-step diagnostic procedure for P305E.
11. When to contact service
Contact a Chevrolet dealer or qualified service provider for diagnosis, particularly if P305E is current or returns after clearing. Service-required status is not established by the supplied evidence.
12. What the service center may check
- Review Chevrolet bulletin 15-NA-087.
- Identify whether the service information uses the term Battery Monitor Module, Battery Sensor Module, or Battery Monitor Sensor.
- The specific inspection, test, and repair checks for P305E are not included in the supplied evidence.
13. Possible repair or resolution
- Not yet established by verified evidence.
14. Affected vehicles
- Chevrolet Bolt EUV · 2021–2023 · US
- Chevrolet Bolt EV · 2021–2023 · US
15. Related TSBs / service bulletins
- Chevrolet bulletin 15-NA-087, NHTSA Manufacturer Communication PDF 10225708, published October 25, 2022. The supplied summary states that P305E was added in a December 12, 2018 revision and that a February 13, 2019 revision added DTC descriptors and Battery Monitor Module terminology.
16. Recall information
No recall relationship is established by verified evidence.
17. Official manufacturer information
Official source: NHTSA-hosted Chevrolet manufacturer communication 15-NA-087: https://static.nhtsa.gov/odi/tsbs/2022/MC-10225708-0001.pdf
19. Frequently asked questions
Which vehicles are supported by the supplied evidence?
U.S. 2021–2023 Chevrolet Bolt EV and 2021–2023 Chevrolet Bolt EUV.
What does P305E mean?
The supplied record labels P305E with bulletin revision text rather than a technical DTC definition. The actual code meaning is not yet established by the supplied verified evidence.
Is P305E related to the Battery Monitor Module?
The bulletin evidence references P305E and revisions concerning the Battery Monitor Module, also called the Battery Sensor Module or Battery Monitor Sensor. A direct technical relationship beyond that is not established by the supplied excerpt.