Subaru P0571 Brake Light Switch Plausibility

Description

OBD-II Trouble Code Description for P0571 Subaru

Brake Switch “A” Circuit

What does this mean?

OBD2 Code P0571 Subaru definition:
When the brake pedal is depressed, the stop light switch sends a signal to the ECM. When the ECM receives this signal, it cancels the cruise control. A fail safe function is provided so that the functions normally, even if there is a malfunction in the stop light signal circuit. The cancel condition occurs as battery positive voltage is supplied to terminal STP. When the brake is on, battery positive voltage is normally applied through the STOP fuse and the stop light switch to terminal STP of the ECM, and the ECM turns the cruise control OFF. If the harness connected to terminal STP has an open circuit, terminal STP will have battery positive voltage and the cruise control will be turned OFF.

Symptoms

Possible sumptoms of OBD code P0571 Subaru
– Engine Light ON (or Service Engine Soon Warning Light) – Stop light inoperative – Cruise control system inoperative

Causes

Possible causes of OBD code P0571 Subaru
– Misadjusted brake switch – Brake switch open or short circuit – Poor brake switch electrical connection – Failed brake switch The Error code is generally activated on detection of the following conditions: The P0571 Subaru codes is set when the stop light switch does not turn off even once the vehicle is driven.

Possible Solutions


The OBD2 Code Information Be Applicable For Subaru:

2013 Subaru WRX Concept,2013 Subaru Viziv Concept,2013 Subaru Outback,2013 Subaru Legacy,2013 Subaru Impreza,2013 Subaru BRZ,2012 Subaru XV,2012 Subaru Impreza,2011 Subaru XV Concept,2011 Subaru Outback,2011 Subaru Impreza,2011 Subaru Forester,2010 Subaru Legacy,2010 Subaru Impreza,2009 Subaru Impreza,2008 Subaru Impreza,2008 Subaru Forester,2006 Subaru Impreza,2005 Subaru R1,2005 Subaru Pleo,2004 Subaru Impreza,2004 Subaru Forester,2003 Subaru Traviq

Note:

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