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Jeep P0A79

Drive Motor B Inverter Performance. Customer may also experience the following: ? Internal Combustion Engine (ICE) propulsion only and

DriveUnknown. The supplied verified evidence does not provide a safe-to-drive determination.
ChargeUnknown. The supplied verified evidence does not provide a safe-to-charge determination.
ServiceService need is not explicitly established by the supplied evidence; however, professional diagnosis is appropriate because the code concerns Drive Motor B inverter performance and the evidence reports possible ICE-only propulsion.
Confidence95%

Quick answer

For a 2021 Jeep Wrangler in the US, DTC P0A79-00 is identified in verified NHTSA manufacturer communication evidence as “Drive Motor B Inverter Performance.” The same evidence states that a customer may experience internal-combustion-engine (ICE) propulsion only; the supplied text is truncated after that point.

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 P0A79 mean?

For a 2021 Jeep Wrangler in the US, DTC P0A79-00 is identified in verified NHTSA manufacturer communication evidence as “Drive Motor B Inverter Performance.” The same evidence states that a customer may experience internal-combustion-engine (ICE) propulsion only; the supplied text is truncated after that point.

2. Technical explanation

The verified manufacturer communication lists P0A79-00 as Drive Motor B Inverter Performance. It also lists P0A78-00, Drive Motor A Inverter Performance, in the same diagnostic context. No further diagnostic thresholds, component-level failure mechanism, or repair procedure is established by the supplied evidence.

3. What system is affected?

Drive Motor B inverter, as named by the DTC description.

4. How serious is this code?

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

5. Symptoms you may notice

  • Customer may experience ICE propulsion only. The supplied source text ends after “and,” so any additional symptom is not established by verified evidence.

6. Possible causes

  • Not yet established by verified evidence.

7. Can I still drive the vehicle?

Unknown. The supplied verified evidence does not provide a safe-to-drive determination.

8. Can I charge the vehicle?

Unknown. The supplied verified evidence does not provide a safe-to-charge determination.

9. What you can safely do

  • Arrange diagnosis by an authorized Jeep service facility or a qualified technician familiar with the vehicle.
  • Do not attempt high-voltage inverter diagnosis or repair yourself.

10. Step-by-step troubleshooting

  1. Have a service facility retrieve and evaluate P0A79-00 using appropriate manufacturer diagnostic procedures.
  2. Check for accompanying diagnostic trouble codes. The verified communication also identifies P0A78-00, Drive Motor A Inverter Performance, in the same context.

11. When to contact service

Service need is not explicitly established by the supplied evidence; however, professional diagnosis is appropriate because the code concerns Drive Motor B inverter performance and the evidence reports possible ICE-only propulsion.

12. What the service center may check

  • Confirm the stored DTC and any accompanying DTCs, including P0A78-00 if present.
  • Follow applicable Jeep manufacturer diagnostic information. Specific diagnostic steps are not provided in the supplied evidence.

13. Possible repair or resolution

  • Not yet established by verified evidence.

14. Affected vehicles

15. Related TSBs / service bulletins

  • NHTSA Manufacturer Communication 10242816: 0817823, published July 20, 2023. It identifies P0A79-00 as Drive Motor B Inverter Performance and notes possible ICE-only propulsion. Applicability supplied: 2021 Jeep Wrangler, US.

16. Recall information

  • Not yet established by verified evidence.

17. Official manufacturer information

Official source: NHTSA Manufacturer Communication 10242816: 0817823 (July 20, 2023): https://static.nhtsa.gov/odi/ffdd/tsbs/TSBS_RECEIVED_2020-2024.zip#nhtsa_id=10242816

19. Frequently asked questions

What does P0A79 mean on the verified applicable Jeep?

It means “Drive Motor B Inverter Performance” for the supplied 2021 Jeep Wrangler US applicability.

What may the driver notice?

The verified communication states that the customer may experience ICE propulsion only. Any further symptom is not established because the supplied evidence is truncated.

Is it safe to drive or charge?

Neither safe-to-drive nor safe-to-charge status is established by the supplied verified evidence.

20. Sources & verification

ReferenceVerified
Jeep P0A79: Drive Motor B Inverter Performance. Customer may also… | EV Diagnostics