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What would cause your subs to stop working and check engine light turn on?

1. Blown fuse.

2.Faulty wiring.

3. Damaged subwoofer amplifier.

4. Subwoofer not properly grounded.

5. Subwoofer turned off or volume set too low.

6. Head unit not properly connected to subwoofer amplifier.

7. Subwoofer not receiving enough power.