Chevrolet P0C89
1. Vehicle in Service Mode. 2. Perform the Diagnostic System Check - Vehicle. Refer toDiagnostic System Check - Vehi
Quick answer
For a 2013 Chevrolet Volt (US), DTC P0C89 is identified in GM bulletin 18NA342 as “Hybrid/EV Battery Temperature Sensor 9 Performance.” The bulletin directs technicians to place the vehicle in Service Mode and perform the Diagnostic System Check - Vehicle.
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 P0C89 mean?
For a 2013 Chevrolet Volt (US), DTC P0C89 is identified in GM bulletin 18NA342 as “Hybrid/EV Battery Temperature Sensor 9 Performance.” The bulletin directs technicians to place the vehicle in Service Mode and perform the Diagnostic System Check - Vehicle.
2. Technical explanation
Verified evidence identifies P0C89 as a performance-related diagnostic trouble code for Hybrid/EV Battery Temperature Sensor 9. The supplied official GM/NHTSA bulletin excerpt does not provide diagnostic thresholds, component-location details, failure mode, or a specific repair.
3. What system is affected?
Hybrid/EV battery temperature sensing: Battery Temperature Sensor 9.
4. How serious is this code?
Not yet established by verified evidence. 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. The supplied bulletin identifies the sensor-performance DTC but does not establish a cause.
7. Can I still drive the vehicle?
Not yet established by verified evidence. The diagnostic record lists safe-to-drive status as unknown.
8. Can I charge the vehicle?
Not yet established by verified evidence. The diagnostic record lists safe-to-charge status as unknown.
9. What you can safely do
- Arrange professional diagnosis using the manufacturer-directed Diagnostic System Check - Vehicle.
- Do not attempt high-voltage battery or sensor repair without appropriate qualified service procedures.
10. Step-by-step troubleshooting
- GM bulletin 18NA342 directs: place the vehicle in Service Mode.
- Then perform the Diagnostic System Check - Vehicle.
- No further test steps are established by the supplied verified evidence.
11. When to contact service
Professional Chevrolet/GM-capable service is appropriate because the verified procedure directs a Diagnostic System Check - Vehicle and the code concerns the Hybrid/EV battery temperature-sensing system.
12. What the service center may check
- Place the vehicle in Service Mode.
- Perform the Diagnostic System Check - Vehicle, as directed by GM bulletin 18NA342.
13. Possible repair or resolution
- Not yet established by verified evidence.
14. Affected vehicles
- Chevrolet Volt · 2013 · US
15. Related TSBs / service bulletins
- GM bulletin 18NA342, published November 19, 2018, lists P0C89 as “Hybrid/EV Battery Temperature Sensor 9 Performance” and directs Service Mode followed by the Diagnostic System Check - Vehicle.
- Source: NHTSA Manufacturer Communication PDF 10155116: 18NA342 — https://static.nhtsa.gov/odi/tsbs/2018/MC-10155116-9999.pdf
16. Recall information
- Not yet established by verified evidence.
17. Official manufacturer information
Verified official source: NHTSA-hosted GM Manufacturer Communication 18NA342 (NHTSA document MC-10155116), published November 19, 2018. Applicability supplied: 2013 Chevrolet Volt, US.
19. Frequently asked questions
What does P0C89 mean on a 2013 Chevrolet Volt?
The supplied GM bulletin identifies P0C89 as Hybrid/EV Battery Temperature Sensor 9 Performance.
What procedure does GM direct for P0C89?
The supplied bulletin directs placing the vehicle in Service Mode and performing the Diagnostic System Check - Vehicle.
Does the verified evidence identify the failed part or repair?
No. A specific failed part and repair are not yet established by verified evidence.
Is it safe to drive or charge with P0C89?
Not yet established by verified evidence. The diagnostic record marks both statuses as unknown.