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Jeep B22A9-16

17, and B22A9-19, Below, Above or Overcurrent. Discussion: Home electrical systems in some cases may create added circuit harmonics that may inhibit the vehicle from completing a c

Common search variants: B22A916 · B22A9 16 · B22A9_16 · Search ignores case and common separators.

DriveNot yet established by verified evidence.
ChargeCharging completion with a home 32-amp Level 2 charger may be inhibited. Jeep communications describe confirming whether the condition is absent and no DTCs set when using a Level 1 charger; other versions describe using a Mopar Level 2 charger for comparison. Safe charging status in an individual case is not yet established by verified evidence.
ServiceContact an authorized Jeep service provider for diagnosis, particularly if B22A9-16 persists or charging does not complete.
Confidence95%

Quick answer

For certain U.S. Jeep Grand Cherokee and Wrangler vehicles, B22A9-16 is documented with incomplete high-voltage battery charging at home using a 32-amp Level 2 charger. Jeep communications associate it with Integrated Dual Charger Module (IDCM) internal-performance/circuit-voltage DTCs B22A9-16, B22A9-17, and B22A9-19.

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 B22A9-16 mean?

For certain U.S. Jeep Grand Cherokee and Wrangler vehicles, B22A9-16 is documented with incomplete high-voltage battery charging at home using a 32-amp Level 2 charger. Jeep communications associate it with Integrated Dual Charger Module (IDCM) internal-performance/circuit-voltage DTCs B22A9-16, B22A9-17, and B22A9-19.

2. Technical explanation

Verified Jeep/NHTSA manufacturer communications state that some home electrical systems can create circuit harmonics that inhibit completion of a charge with a 32-amp Level 2 charger. The DTC is observed in the vehicle’s Integrated Dual Charger Module (IDCM). The supplied evidence does not establish a universal vehicle-component failure or a single cause for every occurrence.

3. What system is affected?

Integrated Dual Charger Module (IDCM) and home Level 2 charging operation.

4. How serious is this code?

Not yet established by verified evidence.

5. Symptoms you may notice

  • The high-voltage battery may not fully charge when using a Level 2 battery charger at home.
  • The IDCM may set B22A9-16 along with B22A9-17 and B22A9-19.
  • The documented condition involves 32-amp Level 2 charging; some earlier communications specifically refer to non-Mopar Level 2 chargers.

6. Possible causes

  • Jeep communications state that home electrical systems may, in some cases, create circuit harmonics that inhibit charging with a 32-amp Level 2 charger.
  • Whether a specific vehicle has this condition, or whether another cause is present, 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?

Charging completion with a home 32-amp Level 2 charger may be inhibited. Jeep communications describe confirming whether the condition is absent and no DTCs set when using a Level 1 charger; other versions describe using a Mopar Level 2 charger for comparison. Safe charging status in an individual case is not yet established by verified evidence.

9. What you can safely do

  • Do not attempt high-voltage or charger-internal repairs.
  • Record the charger type, whether it is a 32-amp Level 2 unit, and whether the high-voltage battery fails to fully charge.
  • Use the comparison charging method described in the applicable Jeep service communication: Level 1 charging in certain versions, or a Mopar Level 2 charger in other versions.
  • Arrange diagnosis by an authorized Jeep service provider if the condition or DTC persists.

10. Step-by-step troubleshooting

  1. For the documented home 32-amp Level 2 charging condition, Jeep communications instruct confirmation that the condition is no longer present and that no DTCs set when using a Level 1 charger in certain bulletin versions.
  2. Other supplied Jeep communications instruct confirming whether the condition is absent when a Mopar Level 2 charger is used instead of a non-Mopar Level 2 charger.
  3. The supplied evidence does not provide further owner-performed diagnostic steps.

11. When to contact service

Contact an authorized Jeep service provider for diagnosis, particularly if B22A9-16 persists or charging does not complete.

12. What the service center may check

  • Check the IDCM for associated DTCs B22A9-16, B22A9-17, and B22A9-19.
  • Confirm the reported charging behavior using the comparison method specified by the applicable Jeep communication.
  • Determine whether the incomplete-charge condition and DTCs are absent with Level 1 charging or, where applicable, with a Mopar Level 2 charger.

13. Possible repair or resolution

  • The supplied 2022 Jeep communications state that engineering was investigating a vehicle update to improve the condition.
  • A final repair or update applicability for an individual vehicle is not yet established by verified evidence.

14. Affected vehicles

15. Related TSBs / service bulletins

  • Jeep service communication S2208000108 Rev D, published October 18, 2022; NHTSA manufacturer communication MC-10227715-9999: https://static.nhtsa.gov/odi/tsbs/2022/MC-10227715-9999.pdf
  • Jeep service communication S2208000108 Rev C, published October 11, 2022; NHTSA manufacturer communication MC-10227708-9999: https://static.nhtsa.gov/odi/tsbs/2022/MC-10227708-9999.pdf
  • Jeep service communication S2208000173, published October 8, 2022; NHTSA manufacturer communication MC-10227705-9999: https://static.nhtsa.gov/odi/tsbs/2022/MC-10227705-9999.pdf
  • Jeep service communication S2208000108, published September 30, 2022; NHTSA manufacturer communication MC-10226013-9999: https://static.nhtsa.gov/odi/tsbs/2022/MC-10226013-9999.pdf
  • Jeep service communication S2208000108 Rev., published May 10, 2022; NHTSA manufacturer communication MC-10214562-9999: https://static.nhtsa.gov/odi/tsbs/2022/MC-10214562-9999.pdf

16. Recall information

  • No recall information was supplied or established by the verified evidence.

17. Official manufacturer information

Verified applicability supplied: U.S. 2021–2023 Jeep Grand Cherokee and U.S. 2021–2023 Jeep Wrangler. The supplied data also includes narrower 2023 Grand Cherokee and 2021–2022 Wrangler entries. Consult the applicable official Jeep service communication and an authorized Jeep service provider for vehicle-specific applicability.

19. Frequently asked questions

What does B22A9-16 mean in the supplied Jeep evidence?

It is one of the IDCM internal-performance/circuit-voltage DTCs documented with B22A9-17 and B22A9-19 during incomplete home Level 2 charging.

Can home power affect charging?

Yes. Jeep communications state that home electrical systems may in some cases create circuit harmonics that inhibit charging with a 32-amp Level 2 charger.

Will a Level 1 charger help diagnose this condition?

Certain Jeep communication versions state that the condition should be checked with a Level 1 charger to confirm that the condition is no longer present and no DTCs set.

Does this prove the vehicle needs an IDCM replacement?

No. The supplied verified evidence does not establish IDCM replacement as the repair for every B22A9-16 occurrence.

20. Sources & verification

Verified
Jeep B22A9-16: 17, and B22A9-19, Below, Above or Overcurrent.… | EV Diagnostics