Brake Switch Circuit
Table of contents
P0703 BUICK Possible Causes
- Faulty Stop Lamp Switch (Brake Switch)
- Stop Lamp Switch harness is open or shorted
- Stop Lamp Switch circuit poor electrical connection
- Faulty Body Control Module (BCM)
How do I fix code P0703 BUICK?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the P0703 BUICK code
The cost of diagnosing the P0703 BUICK code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P0703 BUICK Description
The Body Control Module (BCM) monitors the Stop Lamp Switch (Brake Switch), mounted on the brake pedal. The BCM sends a serial data message to the Engine Control Module (ECM) indicating the status of the stop lamp switch. The Diagnostic Trouble Code (DTC) will set when the Stop Lamp Switch is not to factory specifications.