P0572 Fault Code

Cruise Control/Brake Switch A Circuit Low

• What does that mean?
• Symptoms
• Causes
• Solutions

• The P0572 code indicates an issue with the Cruise Control/Brake Switch A circuit being registered as low. This commonly suggests that the brake pedal is not being recognized properly by the vehicle's control module, which can affect cruise control functionality.
• The fault can arise due to a malfunctioning brake switch, wiring issues, or problems within the engine control module (ECM).
• It is important for the safety of the vehicle and its occupants to address this issue promptly, as it may hinder crucial braking functions.

What are the symptoms of the P0572 code?

• The cruise control may not activate while driving, as it relies on the proper functionality of the brake switch.
• Unexpected disengagement of cruise control when the brake pedal is pressed, possibly leading to erratic behavior.
• The vehicle's check engine light may illuminate, indicating a fault in the system.
• Unusual behavior related to braking, such as brake lights staying on or not illuminating when the brake is applied.

What causes the P0572 code?

• A defective brake switch that fails to provide the correct signals when the pedal is pressed or released.
• Damaged or frayed wiring within the Cruise Control/Brake Switch circuit leading to insufficient voltage being detected.
• Corrosion or poor connections at the brake switch, impacting signal delivery to the ECM.
• A malfunctioning ECM that misinterprets the signals from the brake switch.

How to fix P0572?

• Start by inspecting the brake switch for any visible damages or misalignment. Adjust or replace the switch if necessary.
• Check the wiring and connectors for signs of wear, corrosion, or breaks, and repair or replace as needed.
• Use a multimeter to test the brake switch operation and ensure it provides the correct voltage under various conditions.
• If all else fails, consider reprogramming or replacing the ECM to restore proper functionality.