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Home >> Lexus >> 2017 >> IS 300 F Sport >> Repair and Diagnosis >> External Pages >> Different car >> Section 166 (Engine Control System (4GR-FSE) - Diagnostic Codes (4 Of 5)) >> SFI System >> DTC P0724: Brake Switch "B" Circuit High [04/2013 - 06/2014] >> Monitor Description

Monitor Description

WARNING: This page is about a different car, the 2015 Lexus IS 250 and 2014 Lexus IS 250. However, it is still accessible from the selected car via links, so may be relevant.

This DTC indicates that the stop light switch assembly remaining on. When the stop light switch assembly remains on during "STOP and GO" driving, the ECM interprets this as a fault in the stop light switch assembly. The ECM turns on MIL and stores this DTC. The vehicle must STOP (less than 3 km/h [1.86 mph]) and GO (30 km/h (18.65 mph) or more) 5 times during 2 driving cycles, in order to detect a malfunction.

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