P0571 - Brake Switch A Circuit

WARNING: This page is about a different car, the 2008 Ford Pickup, 2008 Ford F550 Super Duty, 2008 Ford F450 Super Duty, and 2008 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

P0571 - BRAKE SWITCH A CIRCUIT

Description:	The purpose of this DTC is to check whether the brake switch has toggled or not during the KOER test.
Possible Causes:	Open or short in the BPP circuit Open or short in the stoplamp circuits Concern in module(s) connected to the BPP circuit Damaged brake switch Misadjusted brake switch
Diagnostic Aids:	Using the scan tool, check the BOO PID. The BOO PID should toggle on and off with brake pedal activation.
Application		Key On Engine Off	Key On Engine Running	Continuous Memory
All		refer to PINPOINT TEST AI .