Chevrolet P16DC
Battery Sensor Monitor Timer Performance (DTC P16DC disables the Stop/ Start System) • P305D: DC/DC Converter Crank Control Circuit High Voltage • P305E: DC/DC Converter Crank Cont
Quick answer
For certain 2021–2023 Chevrolet Bolt EV and Bolt EUV vehicles in the US, DTC P16DC is identified as “Battery Sensor Monitor Timer Performance.” Verified GM/NHTSA bulletin evidence states that P16DC disables the Stop/Start system.
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 P16DC mean?
For certain 2021–2023 Chevrolet Bolt EV and Bolt EUV vehicles in the US, DTC P16DC is identified as “Battery Sensor Monitor Timer Performance.” Verified GM/NHTSA bulletin evidence states that P16DC disables the Stop/Start system.
2. Technical explanation
The supplied official bulletin evidence identifies P16DC as Battery Sensor Monitor Timer Performance. It specifically states that DTC P16DC disables the Stop/Start system. The diagnostic record also includes P305D and P305E text in its canonical title, but the verified bulletin lists these as separate DTCs, not as definitions or required companions of P16DC.
3. What system is affected?
Battery sensor monitor / Stop-Start system. The diagnostic record does not establish a more specific affected component or circuit.
4. How serious is this code?
Not yet established by verified evidence.
5. Symptoms you may notice
- Stop/Start system is inoperative.
- A “Stop/Start System Disabled” message appears on the Driver Information Center (DIC).
- The Malfunction Indicator Lamp (MIL) is illuminated.
6. Possible causes
- Not yet established by verified evidence. The supplied bulletin excerpt identifies DTCs a technician may observe but does not establish the root cause of P16DC.
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 qualified Chevrolet/GM service facility if the MIL is illuminated or the Stop/Start System Disabled message is present.
- Do not attempt high-voltage or electrical-system repairs based on this information.
10. Step-by-step troubleshooting
- A technician may use a scan tool to confirm stored DTCs. No further diagnostic procedure is established by the supplied verified evidence.
- The bulletin excerpt lists P16DC among DTCs that may be observed; it does not establish that other listed codes must be present.
11. When to contact service
Contact a Chevrolet/GM service facility for diagnosis. Whether immediate service is required is not established by verified evidence.
12. What the service center may check
- Confirm whether P16DC is stored using an appropriate scan tool.
- Check for other stored DTCs, including codes identified in the official bulletin excerpt.
13. Possible repair or resolution
- Not yet established by verified evidence. The supplied bulletin excerpt does not provide a repair procedure or confirmed repair resolution.
14. Affected vehicles
- Chevrolet Bolt EUV · 2021–2023 · US
- Chevrolet Bolt EV · 2021–2023 · US
15. Related TSBs / service bulletins
- GM bulletin 15-NA-087, published through NHTSA as Manufacturer Communication PDF 10225708 on 2022-10-25. The supplied excerpt identifies P16DC as Battery Sensor Monitor Timer Performance and states that it disables the Stop/Start system.
16. Recall information
- Not yet established by verified evidence.
17. Official manufacturer information
Official source: NHTSA Manufacturer Communication PDF 10225708, GM bulletin 15-NA-087: https://static.nhtsa.gov/odi/tsbs/2022/MC-10225708-0001.pdf
19. Frequently asked questions
What does P16DC mean on an applicable Chevrolet Bolt?
Verified evidence identifies P16DC as Battery Sensor Monitor Timer Performance.
What happens when P16DC sets?
The official bulletin states that P16DC disables the Stop/Start system. The supplied bulletin excerpt also describes an inoperative Stop/Start system, a Stop/Start System Disabled DIC message, and MIL illumination.
Can I drive or charge with P16DC?
Not yet established by verified evidence.
Which vehicles are covered by the supplied applicability data?
US-market 2021–2023 Chevrolet Bolt EV and 2021–2023 Chevrolet Bolt EUV.