# B221F on the 2022 Jeep Grand Wagoneer

The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.

This code is specific to a manufacturer and is not described here.

## Bulletins for this model year that name B221F

- [10229121](https://open.wenmarpro.com/bulletins/10229121), 2023-01-09: Flash: Amplifier \(AMP\) Diagnostic and System Updates This bulletin involves reprogramming the AMP with the latest available software. The customer may experience one or more of the following: Active Noise Cancellation \(ANC\) drone noise between 950 RPM and 1,000 RPM, during a start up. Battery draining. Blinking odometer. Upon further investigation the technician may find the following DTCs have been set:The AMP may set B221F\-00 \(Amplifier Internal\) erroneously, it does not affect Active Noise Cancelation \(ANC\) performance.If B221F\-00 is a stored fault update the AMP with appropriate software. If the fault is active, follow normal DTC diagnostics. Use inspection LOP \(18\-60\-07\-AF\) to close the active RSU. B2204\-00 \- ECU Configuration Mismatch.
- [10223159](https://open.wenmarpro.com/bulletins/10223159), 2022-10-17: Flash: Amplifier \(AMP\) Diagnostic and System Updates This bulletin involves reprogramming the AMP with the latest available software. The customer may experience one or more of the following: Active Noise Cancellation \(ANC\) drone noise between 950 RPM and 1,000 RPM, during a start up. Battery draining. Blinking odometer. Upon further investigation the technician may find the following DTCs have been set:The AMP may set B221F\-00 \(Amplifier Internal\) erroneously, it does not affect Active Noise Cancelation \(ANC\) performance.If B221F\-00 is a stored fault update the AMP with appropriate software. If the fault is active, follow normal DTC diagnostics. Use inspection LOP \(18\-60\-07\-AF\) to close the active RSU. B2204\-00 \- ECU Configuration Mismatch.
- [10220777](https://open.wenmarpro.com/bulletins/10220777), 2022-09-26: Flash: Amplifier \(AMP\) Diagnostic and System Updates This bulletin involves reprogramming the AMP with the latest available software. The customer may experience one or more of the following: Active Noise Cancellation \(ANC\) drone noise between 950 RPM and 1,000 RPM, during a start up. Battery draining. Blinking odometer. Upon further investigation the technician may find the following DTCs have been set:The AMP may set B221F\-00 \(Amplifier Internal\) erroneously, it does not affect Active Noise Cancelation \(ANC\) performance.If B221F\-00 is a stored fault update the AMP with appropriate software. If the fault is active, follow normal DTC diagnostics. Use inspection LOP \(18\-60\-07\-AF\) to close the active RSU. B2204\-00 \- ECU Configuration Mismatch.
- [10212380](https://open.wenmarpro.com/bulletins/10212380), 2022-05-31: Flash: Amplifier \(AMP\) Diagnostic and System Updates This bulletin involves reprogramming the AMP with the latest available software. The customer may experience one or more of the following: Active Noise Cancellation \(ANC\) drone noise between 950 RPM and 1,000 RPM, during a start up. Battery draining. Blinking odometer. Upon further investigation the technician may find the following DTCs have been set:The AMP may set B221F\-00 \(Amplifier Internal\) erroneously, it does not affect Active Noise Cancelation \(ANC\) performance.If B221F\-00 is a stored fault update the AMP with appropriate software. If the fault is active, follow normal DTC diagnostics. Use inspection LOP \(18\-60\-07\-AF\) to close the active RSU. B2204\-00 \- ECU Configuration Mismatch.