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C0646: Brake Pressure Sensor L Circuit High

What Does C0646 Mean?

C0646 is a diagnostic trouble code indicating: Brake Pressure Sensor L Circuit High. This code relates to the chassis system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

What To Do Next

  1. 1
    Find your vehicle above

    Click your make and model for real owner reports and common causes specific to your vehicle.

  2. 2
    Check for recalls

    Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.

  3. 3
    Get a professional diagnosis

    A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

Related Codes

C0641 Brake Pressure Sensor K Circuit/Open C0642 Brake Pressure Sensor K Circuit High C0643 Brake Pressure Sensor K Circuit Low C0644 Brake Pressure Sensor K Range/Performance C0645 Brake Pressure Sensor L Circuit/Open C0647 Brake Pressure Sensor L Circuit Low C0648 Brake Pressure Sensor L Range/Performance C0649 Brake Pressure Sensor M Circuit/Open