P0572 Code: Brake Switch A Circuit Low
🟠 Moderate severity · drivable
The brakes themselves still work, but the brake lights or cruise control may not. Check the brake lights before driving.
What P0572 means
The brake pedal switch, also called the stop lamp switch, is sending a low voltage signal to the engine computer. This switch tells the computer when you press the brake, and it also controls the brake lights and cruise control shutoff.
Symptoms
- Check engine light is on
- Brake lights stay on or don't work
- Cruise control won't engage
- Shifter may not release from park in some cars
- Car struggles to start in some cars with brake-to-start
Common causes
- most common: Faulty brake light switch
- common: Misadjusted brake pedal or switch
- common: Blown fuse or shorted wiring
- less common: Failed brake pedal position sensor
How to fix it
| Fix | DIY? | Typical cost |
|---|---|---|
| Check the brake lights and the brake light fuse | Yes | $0–15 |
| Replace the brake light switch | Yes | $20–80 |
| Repair shorted or broken wiring | Mechanic | $50–200 |
Frequently asked questions
Can I drive with a P0572 code?
Yes, but only if your brake lights work. If they don't, other drivers may not see you stopping, so fix that right away.
What does P0572 mean?
The brake switch circuit is reading low voltage. The switch tells the computer and other drivers when you're pressing the brake.
How much does it cost to fix a P0572?
A brake light switch is usually $20–80 and easy to replace yourself; wiring repairs run $50–200.
Related codes
P0573
P0573 Code: Brake Switch A Circuit High
P0571P0571 Code: Brake Switch A Circuit Malfunction
P0565P0565 Code: Cruise Control On Signal
Updated 2026-08. This page is informational and not a substitute for professional diagnosis.