What the P0571 code means. P0571 is the OBD-II generic code for a problem with the switch connected to the brake pedal that deactivates the cruise control system in the vehicle. If this switch is not functional, the cruise control may not operate.
What is a P0571 code?
P0571 is a generic OBD-II diagnostic trouble code (DTC) that the engine control module (ECM) generates. The P0571 code is defined as a “cruise control / brake switch ‘ A’ circuit malfunction.” The letter ‘A’ can refer to a specific wiring, harness, connector, and so on.
What is a brake switch circuit?
What is a brake light switch? Your brake light switch is a simple spring-loaded switch that is held open by a tab on the brake pedal, keeping the brake lights off. When you push the pedal down, the spring causes the switch to close, completing the electrical circuit and turning on the brake lights.
How do I fix code P0573?
How Is The P0573 Code Fixed?
- Replacing a faulty cruise control brake switch.
- Replacing a blown fuse.
- Replacing a defective brake pedal or brake light switch.
- Clearing dirt and debris from the cruise control brake switch assembly.
- Replacing or repairing a damaged harness, connectors, and so on.
How do I fix code P0572?
How Is the Code P0572 Fixed?
- Adjusting the brake light switch.
- Replacing a blown fuse (or fuses).
- Replacing a defective brake pedal and brake light switch.
- Replacing or repairing faulty wiring, connectors, and so on.
- Replacing a faulty cruise control module.
How do I fix code P0571?
What repairs can fix the P0571 code?
- Electrical components and connections will be inspected for signs of damage or wear.
- Any wires or connections that do not appear to be in good working order will be repaired or replaced.
- Once the wiring is all in good shape, the mechanic will inspect the brake pedal and brake switch.
How do you know if your brake light switch is bad?
What Are The Symptoms Of A Faulty Brake Light Switch?
- Your Brake Lights Don’t Light Up. Your brake lights are supposed to turn on when you push down on the brake pedal, giving a heads up to the driver behind you. …
- Brake Lights Stay On Continuously. …
- Bad Cruise Control. …
- Car Won’t Turn On. …
- ABS Warning Light Comes On.
How do you check a brake switch?
A multimeter can be used to test a brake switch. With the brake pedal released, there should be voltage entering the switch, and no voltage out. After pressing the pedal in and completing the circuit, voltage should be present at both ends of the brake light switch.
Where is the brake relay switch located?
The switch is typically located towards the top of your brake pedal lever. You may have to look around in this area, depending on the car, but this location is often convenient for maintenance purposes.
How much does it cost to replace a brake switch?
A replacement brake light switch generally costs around $30 to $75, depending on the make and model of the vehicle. Getting a brake light switch fixed at a shop will add typically $80 to the repair.