Chevrolet P0B41
Before
Quick answer
For a 2019 Chevrolet Bolt EV in the US, P0B41 is referenced in GM Customer Satisfaction Program N202323690 as an existing Hybrid/EV Battery Circuit Performance DTC revised by an Advanced Onboard Diagnostics software update. The supplied evidence does not establish a complete definition for P0B41 beyond the database label “Before.”
This page separates verified manufacturer/regulator evidence from supporting material. Unsupported causes, repairs or safety conclusions are not guessed.
Watch Videos
Relevant videos play here without leaving this diagnostic page.
No sufficiently relevant embeddable video has been accepted for this diagnostic yet.
Videos are supporting material and never override OEM or regulator evidence.
1. What does P0B41 mean?
For a 2019 Chevrolet Bolt EV in the US, P0B41 is referenced in GM Customer Satisfaction Program N202323690 as an existing Hybrid/EV Battery Circuit Performance DTC revised by an Advanced Onboard Diagnostics software update. The supplied evidence does not establish a complete definition for P0B41 beyond the database label “Before.”
2. Technical explanation
NHTSA-posted GM communication N202323690 describes an Advanced Onboard Diagnostics Upgrade. Its software-flashing procedure includes the Hybrid/EV Powertrain Control Module 2 and states that it will revise existing Hybrid/EV Battery Circuit Performance DTCs, including P0B3C and P0B41. The supplied excerpt also states that the update implements P0BBD, adds GDS2 parameters supporting P0BBD, restores maximum battery-pack charging to 100% capability, and includes a Body Control Module coordinated change for a thermal-propagation warning feature. The excerpt does not establish that P0B41 itself means a particular battery fault, that it triggers the warning feature, or that it independently limits charging.
3. What system is affected?
Hybrid/EV Powertrain Control Module 2 and Hybrid/EV battery diagnostic software are identified in the verified bulletin evidence. The source also identifies a coordinated Body Control Module change.
4. How serious is this code?
Unknown. The diagnostic record lists severity as unknown.
5. Symptoms you may notice
- Not yet established by verified evidence.
6. Possible causes
- Not yet established by verified evidence.
7. Can I still drive the vehicle?
Unknown. The diagnostic record lists safe-to-drive status as unknown.
8. Can I charge the vehicle?
Unknown. The diagnostic record lists safe-to-charge status as unknown. The bulletin excerpt instructs that state of charge be kept at or below 90% during the program procedure, but does not establish a general charging rule for every vehicle displaying P0B41.
9. What you can safely do
- Arrange evaluation by a Chevrolet/GM service facility or other qualified EV service provider.
- Do not perform high-voltage battery repairs yourself.
- For vehicles undergoing the N202323690 procedure, the supplied bulletin excerpt says to keep state of charge at or below 90%.
- For vehicles undergoing that procedure, the supplied bulletin excerpt says not to flash software before repairs are completed.
10. Step-by-step troubleshooting
- Confirm the vehicle is a 2019 Chevrolet Bolt EV for the US market, the only verified applicability supplied.
- Have a qualified service provider retrieve diagnostic information and determine whether Customer Satisfaction Program N202323690 applies.
- Not yet established by verified evidence: a step-by-step diagnostic process specific to P0B41.
11. When to contact service
Service evaluation is appropriate because the verified GM program includes a software update that revises P0B41 diagnostic handling. Whether the program applies to a specific VIN is not established by the supplied evidence.
12. What the service center may check
- Verify VIN eligibility and program status for GM Customer Satisfaction Program N202323690.
- Check Hybrid/EV Powertrain Control Module 2 software status.
- Use appropriate service diagnostic equipment; the bulletin references GDS2 parameters for P0BBD, not a specific P0B41 test sequence.
- Follow GM procedure sequencing: the supplied excerpt says not to flash software before repairs are completed.
13. Possible repair or resolution
- The verified communication identifies an Advanced Onboard Diagnostics software update affecting Hybrid/EV Powertrain Control Module 2.
- The supplied evidence does not establish a P0B41-specific repair outcome or guarantee that software programming alone resolves P0B41.
14. Affected vehicles
- Chevrolet Bolt EV · 2019 · US
15. Related TSBs / service bulletins
- NHTSA Manufacturer Communication PDF 10194132, GM Customer Satisfaction Program N202323690, published April 29, 2021. It lists P0B41 among existing Hybrid/EV Battery Circuit Performance DTCs revised by the program’s software update.
16. Recall information
- Not yet established by verified evidence.
17. Official manufacturer information
Official source supplied: NHTSA-hosted GM Manufacturer Communication 10194132, Customer Satisfaction Program N202323690: https://static.nhtsa.gov/odi/tsbs/2021/MC-10194132-9999.pdf
19. Frequently asked questions
What does P0B41 mean on a 2019 Chevrolet Bolt EV?
The supplied diagnostic database label is “Before,” but the verified GM bulletin excerpt does not provide a complete P0B41 definition. It identifies P0B41 as an existing Hybrid/EV Battery Circuit Performance DTC revised by an Advanced Onboard Diagnostics software update.
Does P0B41 apply to the 2019 Chevrolet Bolt EV?
Verified applicability supplied is the 2019 Chevrolet Bolt EV in the United States.
Is there a GM service program mentioning P0B41?
Yes. GM Customer Satisfaction Program N202323690, posted by NHTSA as Manufacturer Communication 10194132, lists P0B41 among DTCs revised through its software-flashing procedure.
Can I continue driving or charging with P0B41?
Not yet established by verified evidence. Both safe-to-drive and safe-to-charge status are recorded as unknown.