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January 27, 2022 Service bulletin

Flash: Amplifier (AMP) Diagnostic and System Updates This bulletin involves reprogramming the AMP with the...

Jeep technical service bulletin 0802022 for 2021 Jeep Grand Cherokee, 2021 Jeep Wrangler and 2021 Ram 1500 and others.

Bulletin number
0802022
Component
Back over prevention
Summary
Flash: Amplifier (AMP) Diagnostic and System Updates This bulletin involves reprogramming the AMP with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one or more of the following Diagnostic Trouble Codes (DTCs) have been set: B143B-12 - ANC Microphone 1-Circuit Short To Battery. B143C-12 - ANC Microphone 2-Circuit Short To Battery. B143E-12 - ANC Microphone 3-Circuit Short To Battery. B143F-12 - ANC Microphone 4-Circuit Short To Battery.The DTCs are wrongly set and do not affect Active Noise Cancelation (ANC) performance.

Owners of these vehicles have filed 167 complaints in the driver assistance category.

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