OBD-II Generic Error Code P0571: How to Fix It

Q: Can I drive with P0571 error code?

You can drive short distances, but it's not recommended for extended driving. The brake lights may not work properly, which is a safety hazard, and cruise control and other systems may be disabled.

Q: How much does it cost to fix P0571?

A brake switch typically costs $15-40, and labor at a shop runs $80-150. Total repair cost ranges from $95-190 if you go to a mechanic, or under $50 if you do it yourself.

Q: What causes brake switch failure?

Brake switches fail due to normal wear from repeated use, exposure to moisture, corrosion of electrical contacts, or physical damage from debris. Most brake switches last 50,000-100,000 miles.

Q: Will P0571 cause my car to fail inspection?

Yes, P0571 will likely cause your vehicle to fail emissions inspection since it's an active diagnostic trouble code. The brake lights not functioning properly may also cause safety inspection failure.

Q: How do I know if my brake switch is bad?

Signs include brake lights not working, brake lights staying on constantly, cruise control not working, difficulty starting the engine, or the P0571 code appearing on an OBD scan.

Abstract

Error code P0571 indicates a malfunction in your vehicle's brake switch A circuit, which tells the engine control module when you press the brake pedal. This can affect cruise control, transmission shifting, and engine start functions.