DTC B1A12-1E: Speaker #12 - Circuit resistance out of range: Action

Refer to the applicable SYSTEM WIRING DIAGRAM(S) and check the subwoofer 2 circuit for short circuit, open circuit, high resistance. Using the manufacturer approved diagnostic system, clear the DTCs and retest. If the fault persists, install a new sub-woofer as necessary
Using the manufacturer approved diagnostic system, clear the DTCs and retest. If the fault persists, install a new audio amplifier module