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Chevrolet P0071

Ambient Air Temperature Sensor Performance Cause GM Engineering is attempting to determine the root cause of the above condition. Engineering has a need to gather information on ve

DriveNot yet established by verified evidence.
ChargeNot yet established by verified evidence.
ServiceContact a Chevrolet dealer or qualified Chevrolet service provider, particularly if the A/C is inoperative or does not blow cold.
Confidence95%

Quick answer

For a 2019 Chevrolet Bolt EV in the US, DTC P0071 is identified in GM/NHTSA communication PIE0543 as “Ambient Air Temperature Sensor Performance.” The communication applies to vehicles with A/C inoperative or weak/not-cold concerns and directs technicians not to proceed with the Engineering Information process for this concern.

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 P0071 mean?

For a 2019 Chevrolet Bolt EV in the US, DTC P0071 is identified in GM/NHTSA communication PIE0543 as “Ambient Air Temperature Sensor Performance.” The communication applies to vehicles with A/C inoperative or weak/not-cold concerns and directs technicians not to proceed with the Engineering Information process for this concern.

2. Technical explanation

Verified evidence identifies P0071 as an ambient air temperature sensor performance DTC. In the cited GM Engineering Information communication, it may be found with A/C concerns, including inoperative A/C or A/C that does not blow cold. The communication says GM Engineering was gathering pre-repair information to determine the root cause; a confirmed component-level cause is not yet established by verified evidence.

3. What system is affected?

Ambient air temperature sensing and the air-conditioning concern described in GM communication PIE0543.

4. How serious is this code?

Unknown. The verified evidence does not assign a severity level.

5. Symptoms you may notice

  • A/C may be inoperative.
  • A/C may be low and may not blow cold.

6. Possible causes

  • Not yet established by verified evidence. GM Engineering stated it was attempting to determine the root cause and gathering vehicle information before repair.

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 service provider if P0071 is present with A/C concerns.
  • Provide the technician with the stored DTCs and the NHTSA/GM communication reference PIE0543.
  • Do not perform high-voltage or air-conditioning system repairs without appropriate training and equipment.

10. Step-by-step troubleshooting

  1. Verified evidence does not provide a consumer or technician repair procedure.
  2. GM communication PIE0543 states: “For this concern, DO NOT proceed with this EI.”

11. When to contact service

Contact a Chevrolet dealer or qualified Chevrolet service provider, particularly if the A/C is inoperative or does not blow cold.

12. What the service center may check

  • Confirm whether P0071 is stored.
  • Assess the reported A/C concern described in PIE0543.
  • Review GM/NHTSA manufacturer communication PIE0543 and current Chevrolet service information.
  • The cited communication indicates GM Engineering sought vehicle information prior to repair; no further verified diagnostic checks are provided in the supplied evidence.

13. Possible repair or resolution

  • Not yet established by verified evidence. The supplied GM communication does not provide a confirmed repair or resolution.

14. Affected vehicles

15. Related TSBs / service bulletins

  • NHTSA Manufacturer Communication PDF 10168225: PIE0543, published October 9, 2019. It lists P0071 among DTCs that may be found when customers report inoperative A/C or A/C that does not blow cold. The communication states GM Engineering was seeking information to determine root cause and says not to proceed with the Engineering Information process for this concern.

16. Recall information

  • No recall information was supplied in the verified evidence.

17. Official manufacturer information

Official source: NHTSA Manufacturer Communication PDF 10168225, GM PIE0543: https://static.nhtsa.gov/odi/tsbs/2019/MC-10168225-9999.pdf

19. Frequently asked questions

What does P0071 mean on a 2019 Chevrolet Bolt EV?

The supplied verified evidence identifies P0071 as “Ambient Air Temperature Sensor Performance.”

Can P0071 be related to air-conditioning performance?

Yes. GM communication PIE0543 states that some customers may report inoperative A/C or A/C that does not blow cold, and technicians may find P0071.

What is the confirmed cause of P0071 in this case?

Not yet established by verified evidence. The communication says GM Engineering was attempting to determine the root cause.

Is it safe to drive or charge with P0071?

Not yet established by verified evidence.

20. Sources & verification

ReferenceVerified
Chevrolet P0071: Ambient Air Temperature Sensor Performance Cause GM… | EV Diagnostics