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Chevrolet P0C8A

1. Vehicle in Service Mode. 2. Perform the Diagnostic System Check - Vehicle. Refer toDiagnostic System Check - Vehicle in SI. 3. Refer to the preceding Diagnostic Trouble Codes

DriveNot yet established by verified evidence.
ChargeNot yet established by verified evidence.
ServiceService is appropriate because the official GM procedure directs use of vehicle service diagnostics. Driving and charging suitability are not established by the supplied evidence.
Confidence95%

Quick answer

For a 2013 Chevrolet Volt (US), P0C8A is identified in GM bulletin 18NA342 as “Hybrid/EV Battery Temperature Sensor 9 Circuit Low Voltage.” The bulletin directs service personnel to place the vehicle in Service Mode, perform the Diagnostic System Check – Vehicle, and then refer to the preceding DTCs in the service information.

This page separates verified manufacturer/regulator evidence from supporting material. Unsupported causes, repairs or safety conclusions are not guessed.

Video guides

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DTC Chevrolet P0C8A Short ExplanationMaxidot Chevrolet

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1. What does P0C8A mean?

For a 2013 Chevrolet Volt (US), P0C8A is identified in GM bulletin 18NA342 as “Hybrid/EV Battery Temperature Sensor 9 Circuit Low Voltage.” The bulletin directs service personnel to place the vehicle in Service Mode, perform the Diagnostic System Check – Vehicle, and then refer to the preceding DTCs in the service information.

2. Technical explanation

Verified evidence identifies P0C8A as a low-voltage circuit diagnostic trouble code for Hybrid/EV Battery Temperature Sensor 9. The supplied official bulletin does not provide a component-level diagnosis, test values, wiring repair procedure, or replacement instruction for this code.

3. What system is affected?

Hybrid/EV battery temperature sensor 9 circuit.

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

  • The verified bulletin establishes that the code concerns a low-voltage condition in the Hybrid/EV Battery Temperature Sensor 9 circuit. A specific underlying cause is not yet established by 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 diagnosis by a qualified Chevrolet/EV service facility.
  • Provide the stored code P0C8A and the vehicle model year when requesting service.
  • Do not attempt high-voltage battery or battery-sensor circuit repair without qualified EV service procedures and training.

10. Step-by-step troubleshooting

  1. GM bulletin 18NA342 directs technicians to place the vehicle in Service Mode.
  2. GM bulletin 18NA342 directs technicians to perform the Diagnostic System Check – Vehicle in service information.
  3. GM bulletin 18NA342 then directs technicians to refer to the preceding diagnostic trouble codes.

11. When to contact service

Service is appropriate because the official GM procedure directs use of vehicle service diagnostics. Driving and charging suitability are not established by the supplied evidence.

12. What the service center may check

  • Place the vehicle in Service Mode.
  • Perform the Diagnostic System Check – Vehicle as referenced in GM service information.
  • Refer to the preceding diagnostic trouble codes, as directed by GM bulletin 18NA342.

13. Possible repair or resolution

  • Not yet established by verified evidence. The supplied bulletin provides diagnostic direction but does not state a confirmed repair or parts replacement for P0C8A.

14. Affected vehicles

15. Related TSBs / service bulletins

  • GM/NHTSA manufacturer communication 18NA342, published November 19, 2018, includes P0C8A among Hybrid/EV battery temperature sensor circuit codes and provides the diagnostic direction to use Service Mode, perform the Diagnostic System Check – Vehicle, and refer to preceding DTCs.

16. Recall information

  • Not yet established by verified evidence.

17. Official manufacturer information

Applicable verified vehicle: 2013 Chevrolet Volt, US. Source: NHTSA Manufacturer Communication PDF 10155116, GM bulletin 18NA342: https://static.nhtsa.gov/odi/tsbs/2018/MC-10155116-9999.pdf

19. Frequently asked questions

What does P0C8A mean on a 2013 Chevrolet Volt?

The verified GM bulletin identifies P0C8A as “Hybrid/EV Battery Temperature Sensor 9 Circuit Low Voltage.”

What does GM direct technicians to do for P0C8A?

GM bulletin 18NA342 directs technicians to put the vehicle in Service Mode, perform the Diagnostic System Check – Vehicle, and refer to the preceding DTCs in service information.

Is it safe to drive or charge with P0C8A?

Not yet established by verified evidence.

What repair fixes P0C8A?

Not yet established by verified evidence. The supplied official bulletin does not specify a repair or component replacement.

20. Sources & verification

ReferenceVerified
Chevrolet P0C8A: 1. Vehicle in Service Mode. 2. Perform the Diagnostic… | EV Diagnostics