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Home >> Lexus >> 2021 >> ES 300h Luxury >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Electronically Controlled Brake System (Hybrid) - Diagnostic Codes (3 Of 5) >> ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for HV Model) >> DTC C1401: Malfunction in Front Speed Sensor RH Circuit; DTC C1402: Malfunction in Front Speed Sensor LH Circuit [06/2018 - 08/2021] >> Monitor Strategy

Monitor Strategy

Related DTCs C0501 (Case 1): Speed sensor range/performance
C0501 (Case 2): Speed sensor range/performance
C0507 (Case 1): Speed sensor range/performance
C0507 (Case 2): Speed sensor range/performance
C140B: 2 wheel speed sensors malfunction
C140C: 2 wheel speed sensors malfunction
Required Sensors/Components(Main) Speed sensor
Speed sensor rotor
Required Sensors/Components(Related) Stop light switch assembly
Parking brake switch assembly
Brake actuator (brake booster with master cylinder assembly)
Speed sensor
Frequency of Operation Continuous
Duration 1 second: C0501 (Case 2) and C0507 (Case 2)
15 seconds: C0501 (Case 1), C0507 (Case 1), C140B and C140C
MIL Operation Immediately
Sequence of Operation None
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