Chevrolet P0AC8
DTC P0ACB Hybrid/EV Battery Temperature Sensor 3 Performance, DTC P0ACC Hybrid/EV Battery Temperature Sensor 3 Circuit Low Voltage, DTC P0ACD Hybrid/EV Battery Temperature Sensor 3
Quick answer
For a 2013 Chevrolet Volt in the US, verified GM/NHTSA bulletin evidence associates P0AC8 with Hybrid/EV Battery Temperature Sensor 2 Circuit High Voltage—not Sensor 3.
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 P0AC8 mean?
For a 2013 Chevrolet Volt in the US, verified GM/NHTSA bulletin evidence associates P0AC8 with Hybrid/EV Battery Temperature Sensor 2 Circuit High Voltage—not Sensor 3.
2. Technical explanation
The supplied official bulletin evidence lists P0AC6 as Battery Temperature Sensor 2 Performance, P0AC7 as Sensor 2 Circuit Low Voltage, and P0AC8 as Sensor 2 Circuit High Voltage. The same evidence separately lists Sensor 3 codes as P0ACB (performance), P0ACC (circuit low voltage), and P0ACD (circuit high voltage). This conflicts with the supplied diagnostic title/meaning, which groups P0AC8 with Sensor 3 descriptions.
3. What system is affected?
Hybrid/EV battery temperature sensor 2 circuit, according to the supplied official bulletin 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
- Use the exact stored DTC and vehicle identification information when arranging diagnosis.
- Do not attempt high-voltage battery or battery-sensor repair without qualified EV service training and procedures.
10. Step-by-step troubleshooting
Not yet established by verified evidence.
11. When to contact service
Service need is not yet established by verified evidence. A qualified Chevrolet/EV service provider can confirm the stored code and apply applicable diagnostic procedures.
12. What the service center may check
Not yet established by verified evidence.
13. Possible repair or resolution
Not yet established by verified evidence.
14. Affected vehicles
- Chevrolet Volt · 2013 · US
15. Related TSBs / service bulletins
- NHTSA Manufacturer Communication PDF 10155116, GM bulletin 18NA342, published November 19, 2018. Supplied evidence identifies P0AC8 as Hybrid/EV Battery Temperature Sensor 2 Circuit High Voltage and distinguishes it from Sensor 3 codes P0ACB, P0ACC, and P0ACD.
16. Recall information
No recall relationship is established by verified evidence.
17. Official manufacturer information
Verified source: NHTSA Manufacturer Communication PDF 10155116, GM bulletin 18NA342: https://static.nhtsa.gov/odi/tsbs/2018/MC-10155116-9999.pdf. Verified applicability supplied: 2013 Chevrolet Volt, US.
19. Frequently asked questions
What does P0AC8 mean for the verified 2013 Chevrolet Volt application?
The supplied official bulletin evidence identifies P0AC8 as Hybrid/EV Battery Temperature Sensor 2 Circuit High Voltage.
Is P0AC8 a Battery Temperature Sensor 3 code?
Not according to the supplied official bulletin evidence. That evidence identifies Sensor 3 codes as P0ACB, P0ACC, and P0ACD.
Can I drive or charge with P0AC8?
Not yet established by verified evidence.