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Home >> Lexus >> 2021 >> RC 350 Base, AWD >> Repair and Diagnosis (Single Page) >> Steering >> Manual Steering >> Variable Gear Ratio Steering System - Diagnostic Codes & Symptom Tests >> Variable Gear Ratio Steering System >> DTC C15B2/72: ECU Malfunction (Internal Line) [09/2014 - 09/2020] >> Description

DTC C15B2/72: ECU Malfunction (Internal Line) [09/2014 - 09/2020]: Description

If the VGRS ECU (front steering control ECU) detects a malfunction in the circuit between the motor and ECU or an internal malfunction, it stores these DTCs and turns the master warning light on.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Return-to-normal Condition
C15B2/72 ECU Malfunction (Internal Line) When the engine switch is turned on (IG), the VGRS ECU (front steering control ECU) detects a malfunction in the circuit between the motor and ECU or an internal malfunction.
  • Steering actuator assembly
  • VGRS ECU (front steering control ECU)
  • Harness or connector
Comes on Engine switch on (IG) again