The P0571 code is an OBD-II trouble code that indicates a malfunction in the Brake Switch ‘A’ Circuit. This code is crucial for the proper functioning of the vehicle’s brake system and its interaction with the engine control module (PCM).
What Does the P0571 Code Mean?
OBD-II Code P0571 is defined as a Brake Switch ‘A’ Circuit. The Brake Switch plays a vital role in signaling the PCM when the brake pedal is pressed. If the PCM detects that the vehicle is slowing down without receiving a signal from the brake switch, it sets the P0571 code.
What Causes the P0571 Code?
Several factors can trigger the P0571 code, including:
- Brake switch failure
- Powertrain Control Module (PCM) failure
- Wiring issues related to the brake switch
What Are the Symptoms of the P0571 Code?
Common symptoms associated with the P0571 code include:
- Brake lights may not illuminate when the brake pedal is pressed
- Cruise control system will not operate
How Serious Is the P0571 Code?
The P0571 code is classified as urgent. It indicates significant malfunctions that can lead to severe damage to the vehicle or pose safety risks to the driver and passengers. Immediate attention is advised to prevent further complications.
How to Diagnose the P0571 Code
Diagnosing the P0571 code involves the following steps:
- Use an OBD-II scanner to confirm the P0571 code and check for any additional codes.
- Inspect the brake switch and its wiring for any visible damage or disconnections.
- Test the brake switch operation to ensure it is functioning correctly.
- Examine the PCM for any faults.
Common Repairs for the P0571 Code
Repairs for the P0571 code may include:
- Replacing a faulty brake switch
- Repairing or replacing damaged wiring
- Replacing or reprogramming the PCM if it is determined to be faulty
How Much Does It Cost to Fix the P0571 Code?
The cost to fix the P0571 code can vary widely depending on the specific issue. On average, expect to pay between $100 and $300 for repairs, which may include parts and labor.
Can I Fix the P0571 Code Myself?
While some DIY enthusiasts may be able to address minor wiring issues or replace a brake switch, it’s important to understand the risks involved. Proper diagnosis is crucial to ensure that the underlying issue is addressed correctly. If you are not experienced with automotive electrical systems, it is advisable to seek professional help.
