P0703 MAZDA Brake Switch 1 Circuit Malfunction

Possible causes
– Faulty Brake Switch
– Misadjusted Brake Switch
– Brake Switch harness is open or shorted
– Brake Switch circuit poor electrical connection
Tech description
Check if the stop light works with the brake pedal, if the brake lights are inoperative, replaced or adjust the brake switch.
– Engine Light ON (or Service Engine Soon Warning Light)
– Brake lights inoperative
P0703 MAZDA OBD Code Description

Engine Control Module (ECM) detected accelerations and decelerations with no brake switch change

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