DTC B1A12-1A: Speaker #12 - Circuit resistance below threshold: Action

NOTE: Meridian® sound, Meridian® Surround and Meridian® Reference audio systems only

Refer to the appropriate system wiring diagrams and test the sub-woofer 2 circuit for short circuit. Using JLR approved diagnostic equipment, clear the DTCs and retest. If the fault persists, install a new sub-woofer
Using JLR approved diagnostic equipment, clear the DTCs and retest. If the fault persists, install a new audio amplifier module