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Home >> Lexus >> 2020 >> ES 300h Luxury >> Repair and Diagnosis >> External Pages >> Different car >> Section 224 (Engine Control System (2GR-FKS) - Diagnostic Codes (07 Of 10)) >> SFI System >> DTC P0703-12: Brake Switch "B" Circuit Short to Battery [08/2020 - 08/2021] >> Monitor Description

Monitor Description

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This DTC indicates that the stop light switch assembly is 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, 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.