EPS Motor Position Sensor Circuit
2004-2016 Aston Martin DB9 6.0L V12
Description
Malfunction in the EPS motor position sensor used for commutation and control.
Symptoms
- EPS warning light
- No power steering assist
- Motor may vibrate or oscillate
- Noise from steering column
Common Causes
- Faulty motor position sensor
- Sensor wiring damage
- EPS motor assembly failure
- Electromagnetic interference
Diagnostic Steps
- Read EPS motor position data with scan tool
- Check sensor signal during slow steering input
- Inspect motor assembly connector
- Test for EMI sources near steering column
- Check motor resolver resistance
Repair Notes
Replace EPS motor assembly. Motor position sensor is typically integral to motor.
Related Codes
Other Chassis Codes
- C0021LF Wheel Speed Sensor Range/Performance
- C0022RF Wheel Speed Sensor Range/Performance
- C0023LR Wheel Speed Sensor Range/Performance
- C0024RR Wheel Speed Sensor Range/Performance
- C0025LF Wheel Speed Sensor Circuit Intermittent
- C0026RF Wheel Speed Sensor Circuit Intermittent
- C0027LR Wheel Speed Sensor Circuit Intermittent
- C0028RR Wheel Speed Sensor Circuit Intermittent
- C0035Left Front Wheel Speed Sensor Circuit
- C0036Left Front Wheel Speed Signal Erratic
C0205 on Other Vehicles
Aston Martin DB11
2016-2024 4.0L V8 Twin Turbo
Aston Martin DB11
2016-2024 5.2L V12 Twin Turbo
Aston Martin DB7
1994-2003 3.2L I6 Supercharged
Aston Martin DBS Superleggera
2019-2024 5.2L V12 Twin Turbo
Aston Martin DBX
2020-2024 4.0L V8 Twin Turbo
Aston Martin Vantage
2005-2024 4.7L V8
Aston Martin Vantage
2018-2024 4.0L V8 Twin Turbo
Common Questions
What does code C0205 mean on a 2004-2016 Aston Martin DB9?
C0205 stands for "EPS Motor Position Sensor Circuit". Malfunction in the EPS motor position sensor used for commutation and control.
What are the symptoms of C0205 on a Aston Martin DB9?
Common symptoms of C0205 include: EPS warning light, No power steering assist, Motor may vibrate or oscillate, Noise from steering column.
What causes C0205 on a 2004-2016 Aston Martin DB9?
Common causes of C0205 include: Faulty motor position sensor, Sensor wiring damage, EPS motor assembly failure, Electromagnetic interference.