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Home >> Lexus >> 2017 >> RC 350 Base, RWD >> Repair and Diagnosis (Single Page) >> Steering >> Power Steering >> Variable Gear Ratio Steering System - Diagnostic Codes & Symptom Tests >> Variable Gear Ratio Steering System >> DTC C15C1/74: Steering Angle Sensor; DTC C15C2/74: Steering Angle Sensor B+ [09/2014 - 09/2020] >> Description
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DTC C15C1/74: Steering Angle Sensor; DTC C15C2/74: Steering Angle Sensor B+ [09/2014 - 09/2020]: Description

The VGRS ECU (front steering control ECU) detects a steering sensor malfunction by receiving an error signal from the steering sensor via CAN communication. If the VGRS ECU (front steering control ECU) detects this error signal, it turns the master warning light on, and stores these DTCs.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Return-to-normal Condition
C15C1/74 Steering Angle Sensor All conditions are met for approximately 3 seconds or more:
  • 1 seconds or more after the engine switch is turned on (IG).
  • Power source voltage at 10 to 16 V.
  • Information regarding a steering sensor internal malfunction is received via CAN communication.
 Steering sensor Comes on Engine switch on (IG) again
C15C2/74 Steering Angle Sensor B+ All conditions are met for approximately 2 seconds or more:
  • 1 seconds or more after the engine switch is turned on (IG).
  • Power source voltage at 10 to 16 V.
  • Information regarding a steering sensor internal malfunction (+B open circuit) is received via CAN communication.
 Steering sensor Comes on Engine switch on (IG) again
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