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DTC - Diagnostic Trouble Codes information

P0724

Powertrain Codes

P0724 - AUDI - Brake Switch B Circuit High

Symptoms

- Engine Light ON (or Service Engine Soon Warning Light) - Stop lights may be inoperative

Possible Causes

- Brake switch harness or connectors - Misadjusted brake light switch - Open or shorted brake switch - Faulty brake light switch

When Detected

The stop light switch does not turn off even once vehicle is driven.

Description

This brake switch send a signal to the Engine Control Module (ECM). The signal is used to detect when the brakes have been applied. In some models the brake switch signal voltage is the same as the voltage supplied to the stop lights.