Flash: Amplifier (AMP) Diagnostic and System Updates Customers must experience a Malfunction Indicator...
Ram technical service bulletin 08-315-25 for 2021 Ram 1500.
- Bulletin number
- 08-315-25
- Component
- Electrical system
- Summary
- Flash: Amplifier (AMP) Diagnostic and System Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● 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. NOTE: The DTCs are wrongly set and do not affect Active Noise Cancellation (ANC) performance This bulletin involves updating the AMP with the latest available software.
Owners of these vehicles have filed 199 complaints in the electrical category.
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