Park Brake Sensor/Switch Circuit High

Common symptoms

What you'll notice

• Check the park brake sensor/switch wiring for any loose or damaged connections.
• Test the park brake sensor/switch with a multimeter to ensure it is functioning properly.
• Inspect the park brake system for any signs of damage or malfunction.
• If all else fails, replace the park brake sensor/switch with a new one.

Common causes

Most likely first

1. Faulty park brake sensor/switch
2. Loose or damaged wiring connected to the park brake sensor/switch
3. Malfunctioning park brake control module
4. Low brake fluid level
5. Failed park brake actuator

How to diagnose & fix

Work through it in order

1. Park brake warning light illuminates on the instrument panel
2. Park brake does not engage or disengage properly
3. Park brake does not release after disengaging
4. Vehicle experiences difficulty starting or will not start at all
5. Vehicle enters a "limp mode" or reduced power mode