Chevrolet C025E
During reprogramming, the battery voltage must be maintained within the proper range of 12.6-15.5 volts. CONNECT the approved Midtronics® PSC 550 Battery Maintainer (SPS Programmin
Quick answer
For a 2017 Chevrolet Bolt EV in the U.S., DTC C025E is addressed by Chevrolet bulletin 17-NA-048 with an EBCM software/calibration update. The bulletin requires 12-V battery voltage to be more than 12.6 V and less than 15.5 V before and during reprogramming.
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1. What does C025E mean?
For a 2017 Chevrolet Bolt EV in the U.S., DTC C025E is addressed by Chevrolet bulletin 17-NA-048 with an EBCM software/calibration update. The bulletin requires 12-V battery voltage to be more than 12.6 V and less than 15.5 V before and during reprogramming.
2. Technical explanation
Verified evidence identifies C025E in connection with vacuum-sensor plausibility fault monitoring. Chevrolet released updated software calibration intended to desensitize that monitoring and the setting of C025E. The documented correction is to update the Electronic Brake Control Module (EBCM) to the latest software and calibration. Before programming, the 12-V battery must be fully charged and verified above 12.6 V and below 15.5 V. During programming, voltage must remain within that range using the approved Midtronics PSC 550 programming support tool or GR8 in power-supply mode.
3. What system is affected?
Electronic Brake Control Module (EBCM); vacuum-sensor plausibility fault monitoring.
4. How serious is this code?
Not yet established by verified evidence.
5. Symptoms you may notice
- A C025E diagnostic trouble code may be set.
6. Possible causes
- Vacuum-sensor plausibility fault monitoring sensitivity, as addressed by the updated EBCM software calibration.
- No further root cause is established by the 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 service with a Chevrolet dealer or qualified service facility for diagnosis and, where applicable, EBCM software/calibration updating.
- Do not attempt module programming without appropriate approved programming-support equipment and procedures.
10. Step-by-step troubleshooting
- Confirm the vehicle is a U.S.-market 2017 Chevrolet Bolt EV.
- Have a service facility check whether EBCM software/calibration updating under bulletin 17-NA-048 applies.
- Before reprogramming, ensure the 12-V battery is fully charged and its voltage is more than 12.6 V but less than 15.5 V.
- Maintain 12-V voltage within the required range throughout programming using the specified programming support equipment.
11. When to contact service
Service is appropriate to evaluate C025E and perform the documented EBCM calibration update when applicable. Whether service is immediately required is not established by verified evidence.
12. What the service center may check
- Verify 12-V battery voltage is more than 12.6 V and less than 15.5 V before reprogramming.
- Verify the 12-V battery is fully charged before reprogramming.
- Maintain 12-V battery voltage within 12.6–15.5 V during reprogramming.
- Update the EBCM to the latest software and calibration.
13. Possible repair or resolution
- EBCM software and calibration update, using the procedure in Chevrolet bulletin 17-NA-048.
- Use an approved Midtronics PSC 550 Battery Maintainer/SPS Programming Support Tool (EL-49642) or GR8 (EL50313) in power-supply mode during programming.
14. Affected vehicles
- Chevrolet Bolt EV · 2017 · US
15. Related TSBs / service bulletins
- Chevrolet bulletin 17-NA-048, published February 21, 2017. NHTSA manufacturer communication PDF 10116634. It documents an updated EBCM calibration for C025E-related vacuum-sensor plausibility fault monitoring on the applicable vehicle.
16. Recall information
- No recall information is established by the supplied verified evidence.
17. Official manufacturer information
NHTSA manufacturer communication PDF 10116634: Chevrolet bulletin 17-NA-048, https://static.nhtsa.gov/odi/tsbs/2017/MC-10116634-9999.pdf
19. Frequently asked questions
What does C025E mean on a 2017 Chevrolet Bolt EV?
The verified bulletin associates C025E with vacuum-sensor plausibility fault monitoring and specifies an updated EBCM software calibration intended to desensitize that monitoring and the setting of the code.
What repair does the bulletin specify?
Update the Electronic Brake Control Module (EBCM) to the latest software and calibration, while following the documented 12-V programming-voltage requirements.
What voltage is required during programming?
The bulletin requires voltage to be more than 12.6 V and less than 15.5 V before programming and maintained within that range during programming.
Does this information apply to every Bolt EV?
The supplied applicability evidence covers U.S.-market 2017 Chevrolet Bolt EV vehicles. Applicability to other model years, regions, or models is not yet established by verified evidence.