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Home >> Lexus >> 2022 >> ES 350 Base >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Electronically Controlled Brake System (Except Hybrid) - Diagnostic Codes (2 Of 4) >> ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model) >> DTC C0512-1F: Right Rear Wheel Speed Sensor Circuit Intermittent [08/2020 - ] >> Description

DTC C0512-1F: Right Rear Wheel Speed Sensor Circuit Intermittent [08/2020 - ]: Description

Refer to DTC C0512-12

Refer to DESCRIPTION 

DTC No. Detection Item DTC Detection Condition Trouble Area
C0512-1F Right Rear Wheel Speed Sensor Circuit Intermittent
  • The speed sensor signal is excessively noisy.
  • The calculated change in wheel speed is more than 980 m/s2 for 5*1 or 20*2 seconds or more.
  • The calculated change in wheel speed fluctuates between more than 500 m/s2 and less than -500 m/s2 for 5*1 or 20*2 seconds or more.
  • When the vehicle speed is low, excessive noise in the speed sensor pulse signal is detected 3 times or more within 0.005 seconds for 5*1 or 20*2 seconds or more.
  • Rear speed sensor RH (rear axle hub and bearing assembly RH)*3
  • Rear speed sensor RH*4
  • Rear speed sensor rotor RH (rear axle hub and bearing assembly RH)
  1. *1: The stop light switch assembly is OFF.
  2. *2: The stop light switch assembly is ON.
  3. *3: for 2WD
  4. *4: for AWD
DTC DETECTION CONDITIONS: C0512-1F

  Vehicle Condition
Pattern 1 Pattern 2 Pattern 3 Pattern 4
Diagnosis Condition The Stop light switch assembly is OFF. - ◦ ◦ ◦
Malfunction Status The speed sensor signal is excessively noisy. ◦ - - -
The calculated change in wheel speed is more than 980 m/s2 . - ◦ - -
The calculated change in wheel speed fluctuates between more than 500 m/s2 and less than -500 m/s2 . - - ◦ -
The vehicle speed is low, excessive noise in the speed sensor pulse signal is detected 3 times or more within 0.005 seconds. - - - ◦
Detection Time - 5 seconds or more. 5 seconds or more. 5 seconds or more.
Number of Trips 1 trip 1 trip 1 trip 1 trip

HINT: 

DTC will be output when conditions for either of the patterns in the table above are met.

DTC DETECTION CONDITIONS: C0512-1F

  Vehicle Condition
Pattern 5 Pattern 6 Pattern 7
Diagnosis Condition The stop light switch assembly is ON. ◦ ◦ ◦
Malfunction Status The calculated change in wheel speed is more than 980 m/s2 . ◦ - -
The calculated change in wheel speed fluctuates between more than 500 m/s2 and less than -500 m/s2 . - ◦ -
The vehicle speed is low, excessive noise in the speed sensor pulse signal is detected 3 times or more within 0.005 seconds. - - ◦
Detection Time 20 seconds or more. 20 seconds or more. 20 seconds or more.
Number of Trips 1 trip 1 trip 1 trip

HINT: 

DTC will be output when conditions for either of the patterns in the table above are met.

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