LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2023 >> RC F Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 17 (Torque Vectoring Differential System - Diagnostic Codes) >> Torque Vectoring Differential System >> DTC C2A08: RH Pre-Driver Circuit; DTC C2A09: LH Pre-Driver Circuit [09/2014 - 01/2023] >> Description
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC C2A08: RH Pre-Driver Circuit; DTC C2A09: LH Pre-Driver Circuit [09/2014 - 01/2023]: Description

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2022 Lexus RC F, 2021 Lexus RC F, 2020 Lexus RC F, 2019 Lexus RC F, and 2018 Lexus RC F. However, it is still accessible from the selected car via links, so may be relevant.

If the torque vectoring differential ECU assembly detects a malfunction in either of its pre-driver circuits (TVD motor driving booster circuits), a DTC is stored.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate
C2A08 RH Pre-Driver Circuit Diagnosis Condition:
  • IG power source voltage is 10 V or more or PIG power source voltage is 10 V or more.

Abnormal condition:
  • Malfunction detected in the pre-driver circuit.

Malfunction Time:
  • 0.1 seconds or more

Trip logic:
  • 1 trip detection logic
Torque vectoring differential ECU assembly
  • Master Warning Light: Comes on
  • Multi-information Display Error Message: Comes on
C2A09 LH Pre-Driver Circuit Diagnosis Condition:
  • IG power source voltage is 10 V or more or PIG power source voltage is 10 V or more.

Abnormal condition:
  • Malfunction detected in the pre-driver circuit.

Malfunction Time:
  • 0.1 seconds or more

Trip logic:
  • 1 trip detection logic
Torque vectoring differential ECU assembly
  • Master Warning Light: Comes on
  • Multi-information Display Error Message: Comes on