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Aion P16E191

P16E191

DriveUnknown. The supplied evidence does not establish whether driving is safe with P16E191 present.
ChargeUnknown. The supplied evidence does not establish whether charging is safe with P16E191 present.
ServiceService need is unknown in the supplied evidence. Because this code is identified in the BMS / traction battery system and its OEM description is not publicly available, consult Aion service information or a qualified EV service provider for interpretation.
Confidence85%

Quick answer

P16E191 is a verified Aion diagnostic trouble code listed under the BMS / traction battery system. Its full OEM meaning is not publicly available in the supplied evidence.

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 P16E191 mean?

P16E191 is a verified Aion diagnostic trouble code listed under the BMS / traction battery system. Its full OEM meaning is not publicly available in the supplied evidence.

2. Technical explanation

Verified technical-manual indexes list P16E191 for specified Aion vehicles. The supplied sources confirm the code identity, but the complete OEM diagnostic description is gated or not public. Therefore, the precise fault condition, setting criteria, and diagnostic procedure are not yet established by verified evidence.

3. What system is affected?

BMS / traction battery

4. How serious is this code?

Unknown. The supplied evidence does not provide a severity classification.

5. Symptoms you may notice

  • Not yet established by verified evidence.

6. Possible causes

  • Not yet established by verified evidence.

7. Can I still drive the vehicle?

Unknown. The supplied evidence does not establish whether driving is safe with P16E191 present.

8. Can I charge the vehicle?

Unknown. The supplied evidence does not establish whether charging is safe with P16E191 present.

9. What you can safely do

  • Record the code exactly as P16E191 and retain any accompanying diagnostic information.
  • Arrange diagnosis using applicable Aion service information or a qualified EV service provider.
  • Do not attempt high-voltage battery or BMS repair procedures based on this code alone.

10. Step-by-step troubleshooting

  1. Confirm P16E191 with a diagnostic tool that supports the applicable Aion vehicle.
  2. Check for additional stored diagnostic codes and preserve freeze-frame or scan-tool data if available.
  3. Use the applicable OEM diagnostic information to determine the fault definition and test procedure. Further troubleshooting steps are not yet established by verified evidence.

11. When to contact service

Service need is unknown in the supplied evidence. Because this code is identified in the BMS / traction battery system and its OEM description is not publicly available, consult Aion service information or a qualified EV service provider for interpretation.

12. What the service center may check

  • Verify code P16E191 using a compatible scan tool.
  • Review all accompanying diagnostic codes and available scan data.
  • Identify the exact vehicle model and model year before consulting the applicable Aion diagnostic manual.
  • Follow the OEM procedure only after obtaining the full code definition. Specific tests are not yet established by verified evidence.

13. Possible repair or resolution

  • Not yet established by verified evidence.

14. Affected vehicles

15. Related TSBs / service bulletins

  • Not yet established by verified evidence.

16. Recall information

  • Not yet established by verified evidence.

17. Official manufacturer information

Verified database evidence consists of technical-manual index listings that identify P16E191, while stating that the full OEM description is gated or not public. Verified applicability: Aion AION S MAX (2023, GLOBAL); Aion AION RT (2024, GLOBAL); Aion AION UT (2025, GLOBAL); Aion AION V (2024, GLOBAL); and Aion AION Y (2023–2024, GLOBAL).

19. Frequently asked questions

What does Aion code P16E191 mean?

The full OEM meaning is not yet established by verified evidence. The supplied technical-manual indexes verify only that P16E191 is listed for the specified Aion vehicles.

Which system is associated with P16E191?

The supplied diagnostic record identifies the system as BMS / traction battery.

Which Aion vehicles are verified to list P16E191?

Verified listings cover the 2023 AION S MAX, 2024 AION RT, 2025 AION UT, 2024 AION V, and 2023–2024 AION Y, all with GLOBAL region applicability in the supplied data.

Can I drive or charge with P16E191?

Not yet established by verified evidence. The supplied data classifies both driving and charging safety as unknown.

20. Sources & verification

Verified
Aion P16E191: P16E191 | EV Diagnostics