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Home >> Lexus >> 2017 >> RC F >> Repair and Diagnosis >> Brakes >> Traction Control >> Vehicle Stability Control System - Diagnostic Codes (3 Of 5) >> Vehicle Stability Control System >> DTC C1409: Front Speed Sensor RH Performance; DTC C1410: Front Speed Sensor LH Performance [09/2014 - 11/2017] >> Description
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DTC C1409: Front Speed Sensor RH Performance; DTC C1410: Front Speed Sensor LH Performance [09/2014 - 11/2017]: Description

The speed sensor rotors have rows of alternating N and S magnetic poles. The speed sensors use the frequency of output pulses to detect the vehicle speed. Because the sensor outputs digital pulses, it can detect the vehicle speed even when the vehicle is nearly stationary.

DTC No. Detection Item DTC Detection Condition Trouble Area
C1409 Front Speed Sensor RH Performance A reverse signal continues for 5 seconds or more when the vehicle speed is 3 km/h (1.9 mph) or more. Front speed sensor RH (Front axle hub sub-assembly RH)
C1410 Front Speed Sensor LH Performance A reverse signal continues for 5 seconds or more when the vehicle speed is 3 km/h (1.9 mph) or more. Front speed sensor LH (Front axle hub sub-assembly LH)

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