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Jeep B22A9

• Vehicle would not charge and the charge station circuit breaker in the house / recepticle trips when its plugged into the vehicle. NOTE: Additional module flashes are required fo

DriveNot yet established by verified evidence.
ChargeThe verified bulletin documents that the vehicle may not charge and that a household charge-station/receptacle circuit breaker may trip when connected. Whether charging is safe in an individual case is not yet established by verified evidence.
ServiceContact an authorized Jeep dealer or qualified service facility promptly if B22A9-64 is present, charging fails, or the home charging circuit breaker trips.
Confidence95%

Quick answer

For certain Jeep 2.0L I4 DOHC DI Turbo PHEV vehicles, B22A9-64 is documented with a no-charge condition and a home charge-station/receptacle circuit breaker that trips when the vehicle is connected. The verified bulletin states that additional module flashes are required for the update. Do not continue attempting to charge from a circuit that trips; arrange Jeep dealer diagnosis.

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 Jeep B22A9-04 Short ExplanationMaxidot Jeep

Videos are supporting material and never override OEM or regulator evidence.

1. What does B22A9 mean?

For certain Jeep 2.0L I4 DOHC DI Turbo PHEV vehicles, B22A9-64 is documented with a no-charge condition and a home charge-station/receptacle circuit breaker that trips when the vehicle is connected. The verified bulletin states that additional module flashes are required for the update. Do not continue attempting to charge from a circuit that trips; arrange Jeep dealer diagnosis.

2. Technical explanation

Verified NHTSA manufacturer communication 08-055-22 REV.B documents B22A9-64 as “ECU Internal Performance—Signal Plausibility Failure.” It applies to vehicles equipped with the 2.0L I4 DOHC DI Turbo PHEV engine (sales code ECX) in North America, APAC, and EMEA. The supplied evidence associates this code with P0D27-00, Battery Charger 1 Input Voltage Too Low, and states that additional module flashes are required for the update. Other supplied Jeep communications list B22A9 with different failure subtypes, including B22A9-96 and B22A9-49; those are not interchangeable with B22A9-64.

3. What system is affected?

Electronic control unit performance, with the verified B22A9-64 bulletin also addressing charging behavior. A more specific component identification is not yet established by verified evidence.

4. How serious is this code?

Unknown. The verified evidence documents charging interruption and tripping of a household charging circuit, but does not assign a severity rating.

5. Symptoms you may notice

  • Malfunction Indicator Lamp (MIL) illumination.
  • Vehicle would not charge.
  • The charge-station circuit breaker in the house or receptacle trips when the vehicle is plugged in.

6. Possible causes

  • For B22A9-64, the verified description is ECU Internal Performance—Signal Plausibility Failure.
  • The underlying root cause beyond the documented ECU performance fault 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?

The verified bulletin documents that the vehicle may not charge and that a household charge-station/receptacle circuit breaker may trip when connected. Whether charging is safe in an individual case is not yet established by verified evidence.

9. What you can safely do

  • If the charging circuit breaker trips, stop the charging attempt and do not repeatedly reset the breaker to continue charging.
  • Have the vehicle evaluated by an authorized Jeep service facility.
  • Provide the stored DTC suffixes, especially whether the code is B22A9-64, because supplied Jeep communications identify multiple B22A9 variants.

10. Step-by-step troubleshooting

  1. Confirm the complete DTC, including its failure subtype. The verified charging bulletin concerns B22A9-64.
  2. Check whether P0D27-00, Battery Charger 1 Input Voltage Too Low, is also stored, as documented in the verified bulletin.
  3. A service technician should determine whether the applicable module software updates are available; the bulletin states that additional module flashes are required for the update.

11. When to contact service

Contact an authorized Jeep dealer or qualified service facility promptly if B22A9-64 is present, charging fails, or the home charging circuit breaker trips.

12. What the service center may check

  • Retrieve and record complete diagnostic codes and subtypes.
  • Check for B22A9-64 and the associated P0D27-00 named in NHTSA communication 08-055-22 REV.B.
  • Determine applicability of the bulletin’s required module flashes.
  • For B22A9-49, a separate supplied communication instructs service personnel to clear and recheck the DTC, check battery voltage, and replace the ECU if the issue remains. Its vehicle applicability is not established in the supplied evidence.

13. Possible repair or resolution

  • For the B22A9-64 charging bulletin, the verified corrective direction is an update requiring additional module flashes.
  • No parts replacement for B22A9-64 is established by the supplied verified evidence.

14. Affected vehicles

15. Related TSBs / service bulletins

  • NHTSA Manufacturer Communication PDF 10221509 / 08-055-22 REV.B, published June 29, 2022: Applies to vehicles with the 2.0L I4 DOHC DI Turbo PHEV engine (ECX); identifies B22A9-64, P0D27-00, MIL illumination, no charging, and possible household circuit-breaker tripping; states additional module flashes are required.
  • NHTSA Manufacturer Communication 11004342 / 9100386, published July 11, 2024: References B22A9-49, ECU Internal Performance—Internal Electronic Failure, with instructions to clear/recheck, check battery voltage, and replace the ECU if the issue persists. Applicability is not established by the supplied evidence.
  • NHTSA Manufacturer Communications 11030114 / 08-001-26 REV.A, 11030115 / 08-105-26, 11030116 / 08-106-26, and 11032324 / 08-199-26 list B22A9-96, ECU Internal Performance—Component Internal Failure, among listed DTCs. Detailed applicability and repair procedures are not established by the supplied evidence.

16. Recall information

  • No recall is established by the supplied verified evidence.

17. Official manufacturer information

Official source: NHTSA Manufacturer Communication PDF 10221509, bulletin 08-055-22 REV.B: https://static.nhtsa.gov/odi/tsbs/2022/MC-10221509-9999.pdf

19. Frequently asked questions

What does Jeep code B22A9-64 mean?

The verified bulletin defines B22A9-64 as ECU Internal Performance—Signal Plausibility Failure.

Can B22A9-64 cause a Jeep PHEV not to charge?

Yes. The verified bulletin states that the vehicle may not charge and that the home charge-station/receptacle circuit breaker may trip when the vehicle is plugged in.

Is P0D27-00 related to B22A9-64?

The verified bulletin lists P0D27-00, Battery Charger 1 Input Voltage Too Low, together with B22A9-64.

Does B22A9 always mean the same fault?

No. The supplied evidence includes B22A9-64, B22A9-96, and B22A9-49, each with a different documented failure description.

Is there a verified recall for this code?

No recall is established by the supplied verified evidence.

20. Sources & verification

Verified
Jeep B22A9: • Vehicle would not charge and the charge station circuit… | EV Diagnostics