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B2101 OBD-II Trouble Code: Head Rest Switch Circuit Failure
B2101 trouble code means there's a malfunction with the power headrest switch circuit, caused by faulty components in the headrest switch or headrest.
B2102 OBD-II Trouble Code: Antenna Circuit Short to Ground
B2102 trouble code means the antenna circuit has a malfunction, cause by defective electrical components or antenna mast, or a failed antenna cable.

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