Service bulletin 0804622

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
Type	Service bulletin
NHTSA id	10212380
Published by NHTSA	2022-05-31
Manufacturer's number	0804622
Manufacturer's date	2022-03-04
NHTSA component	EQUIPMENT; ELECTRICAL SYSTEM:SOFTWARE; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM)

NHTSA's summary

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.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system, Engine, Equipment and accessories, Engine control module, Software

Trouble codes named

B2204, B221F

Vehicles listed
JEEP GRAND WAGONEER	2022

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
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0815922	2022-10-31. Service bulletin. Flash: Seat Massage Module (SMM) Updates This bulletin involves reprogramming the SMM with the latest software available. The customer may describe the following: Either one or both massage seats inoperative after the battery was charged from a full drain state.
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0809922REVB	2022-10-31. Service bulletin. Power Side Step Module (PSSM) Update This bulletin involves reprogramming the PSSM with the latest available software. The customer may experience one or more of the following:The power side steps still deploy/retract after being disabled (i.e. Power Side Step Store Mode) from the radio settings, this is observed when the vehicle just wakes up from sleep. The PSSM will not be able to enter sleep mode (resulting in a battery drain) the moment the power side step radio setting is changed from ?Auto? to ?Store? mode and closing a door at the same time (changing radio setting within five seconds after a door is closed).
0812122REVA	2022-10-31. Service bulletin. Radio Over The Air Software Version Updates This bulletin provides information regarding the latest Flash Over The Air (FOTA) update and provides the service technician an overview of the steps a customer will need to take to complete the update. The radio software will be updated from S21D.5 and S23.13 to S24.18The national launch for the FOTA is expected to begin on:WS - May 24, 2022 WL - May 31, 2022 RU - S21D.5 to S24.18, June 06, 2022 RU - S23.13 to S24.18, May 21, 2022 Customers may experience one or more of the following: Navigation inoperative. Black or blank radio screen (Rear View Camera (RVC) will still function normally). Radio lockup (RVC will still function normally). Surround sound inoperative. Blu-ray DVD unavailable. Listen in/Mirror feature inoperative. PHEV radio does not turn off when opening door or after charging. No Verbal warnings on navigation. Audio Overlap between sources. Radio doesn?t recognize the vehicle is in park. No keyboard pop up, vehicles setting are hidden. Radio presets are not saving. Audio mute on calls (Phone, SOS and Ecall). Radio resets. Radio screen freezes. The rear view camera display, will work properly if the radio display screen freezes. Audio disruptions. Unable to connect compatible wireless connectivity device. Wireless connectivity disconnecting. Improvements are included with this update: Apple CarPlay® and Android Auto® improvements. Voice Recognition improvements. Uconnect Phone improvements.