Active Steering System Malfunction
2003-2009 Toyota 4Runner 4.0L V6
Description
General fault in the active steering system that adjusts steering ratio based on vehicle speed.
Symptoms
- Active steering warning light
- Fixed steering ratio
- Steering feels different at various speeds
- Driver assist features limited
Common Causes
- Active steering motor failure
- Control module fault
- Position sensor malfunction
- CAN communication error
Diagnostic Steps
- Scan for active steering module codes
- Test active steering motor
- Check CAN communication to module
- Inspect wiring and connectors
- Test position feedback sensors
Repair Notes
Diagnose specific active steering component. System defaults to fixed ratio when faulted.
Related Codes
Other Chassis Codes
- C0021LF Wheel Speed Sensor Range/Performance
- C0021LF Wheel Speed Sensor Range/Performance
- C0022RF Wheel Speed Sensor Range/Performance
- C0022RF Wheel Speed Sensor Range/Performance
- C0023LR Wheel Speed Sensor Range/Performance
- C0023LR Wheel Speed Sensor Range/Performance
- C0024RR Wheel Speed Sensor Range/Performance
- C0024RR Wheel Speed Sensor Range/Performance
- C0025LF Wheel Speed Sensor Circuit Intermittent
- C0025LF Wheel Speed Sensor Circuit Intermittent
C0240 on Other Vehicles
Toyota 4Runner
2003-2009 4.7L V8
Toyota 4Runner
2010-2024 4.0L V6
Toyota 86
2017-2020 2.0L H4
Toyota Alphard
2023-2025 2.4L I4 Turbo T24A-FTS
Toyota Alphard
2023-2025 2.5L I4 Hybrid A25A-FXS
Toyota Altezza
1998-2005 2.0L I4 3S-GE BEAMS
Toyota Altezza
1998-2005 2.0L I6 1G-FE
Toyota Aqua
2011-2021 1.5L I4 Hybrid 1NZ-FXE
Common Questions
What does code C0240 mean on a 2003-2009 Toyota 4Runner?
C0240 stands for "Active Steering System Malfunction". General fault in the active steering system that adjusts steering ratio based on vehicle speed.
What are the symptoms of C0240 on a Toyota 4Runner?
Common symptoms of C0240 include: Active steering warning light, Fixed steering ratio, Steering feels different at various speeds, Driver assist features limited.
What causes C0240 on a 2003-2009 Toyota 4Runner?
Common causes of C0240 include: Active steering motor failure, Control module fault, Position sensor malfunction, CAN communication error.