C0078
Steering Position Sensor Circuit Low
1992-1998 BMW 325i E36 2.5L I6 M50 🇬🇧
Moderate SeverityChassis
Description
The steering angle sensor is reporting a lower signal than expected for the current steering input.
Symptoms
- Stability control fault
- ESC disabled
- Steering position reads incorrectly on scan tool
Common Causes
- Sensor power supply low
- Signal wire shorted to ground
- Sensor internal failure
- Clock spring wiring issue
Diagnostic Steps
- Check sensor power supply voltage
- Test signal wire for shorts to ground
- Monitor sensor output through full steering range
- Inspect clock spring wiring
- Check steering column connector
Repair Notes
Repair wiring short or replace steering angle sensor.
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
C0078 on Other Vehicles
Common Questions
What does code C0078 mean on a 1992-1998 BMW 325i E36?
C0078 stands for "Steering Position Sensor Circuit Low". The steering angle sensor is reporting a lower signal than expected for the current steering input.
What are the symptoms of C0078 on a BMW 325i E36?
Common symptoms of C0078 include: Stability control fault, ESC disabled, Steering position reads incorrectly on scan tool.
What causes C0078 on a 1992-1998 BMW 325i E36?
Common causes of C0078 include: Sensor power supply low, Signal wire shorted to ground, Sensor internal failure, Clock spring wiring issue.