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Home >> Lexus >> 2020 >> 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 C1403: Malfunction in Rear Speed Sensor RH Circuit; DTC C1404: Malfunction in Rear Speed Sensor LH Circuit [06/2018 - 08/2021] >> Description

DTC C1403: Malfunction in Rear Speed Sensor RH Circuit; DTC C1404: Malfunction in Rear Speed Sensor LH Circuit [06/2018 - 08/2021]: Description

Refer to DTCs C1415 and C1416.

Refer to DTC C1415: Rear Speed Sensor RH Circuit Output; DTC C1416: Rear Speed Sensor LH Circuit Output [06/2018 - 08/2021]

DTC No. Detection Item INF Code DTC Detection Condition Trouble Area MIL Note
C1403 Malfunction in Rear Speed Sensor RH Circuit 521
522
527
  • INF Code: 521
    • At a vehicle speed of 10 km/h (6 mph) or more, output voltage from one of the speed sensors is less than that from the other sensors for 15 seconds or more.
  • INF Code: 522
    • At a vehicle speed of 10 km/h (6 mph) or more, outputs from both speed sensors are 0 km/h (0 mph) for 15 seconds or more. (except when both rear speed sensors are 0 km/h (0 mph)).
  • INF Code: 527
    • At a vehicle speed of 10 km/h (6 mph) or more, output from one of the speed sensors is 0 km/h (0 mph) for 1 second or more.
  • Skid control sensor wire RH (No. 1 parking brake wire assembly)
  • Rear speed sensor RH (rear axle hub and bearing assembly RH)
  • Speed sensor installed improperly
  • Rear speed sensor rotor RH (rear axle hub and bearing assembly RH)
  • Wire harness or connector
Comes on
  • INF Code 521: SAE Code C0513 (Case 1)
  • INF Code 522: SAE Code C140E
  • INF Code 527: SAE Code C0513 (Case 2)
  • ABS DTC
C1404 Malfunction in Rear Speed Sensor LH Circuit 531
532
537
  • INF Code: 531
    • At a vehicle speed of 10 km/h (6 mph) or more, output voltage from one of the speed sensors is less than that from the other sensors for 15 seconds or more.
  • INF Code: 532
    • At a vehicle speed of 10 km/h (6 mph) or more, outputs from both speed sensors are 0 km/h (0 mph) for 15 seconds or more. (except when both rear speed sensors are 0 km/h (0 mph)).
  • INF Code: 537
    • At a vehicle speed of 10 km/h (6 mph) or more, output from one of the speed sensors is 0 km/h (0 mph) for 1 second or more.
  • Skid control sensor wire LH (No. 2 parking brake wire assembly)
  • Rear speed sensor LH (rear axle hub and bearing assembly LH)
  • Speed sensor installed improperly
  • Rear speed sensor rotor LH (rear axle hub and bearing assembly LH)
  • Wire harness or connector
Comes on
  • INF Code 531: SAE Code C050D (Case 1)
  • INF Code 532: SAE Code C140D
  • INF Code 537: SAE Code C050D (Case 2)
  • ABS DTC