Steering Angle Sensor Not Calibrated
The steering angle sensor needs calibration for proper operation.
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What it means (plain English)
The steering angle sensor tracks the position of the steering wheel, but it can’t find the current position, so the system doesn't know how far you've turned the wheel.
What the computer is actually seeing
The computer expects a calibrated steering angle sensor to report values between -90 to +90 degrees when turning the wheel. If it sees values outside of this range, or detects no change when moving the wheel, it triggers the C0743 code.
What a healthy reading looks like
Steering angle should report values between -90° and +90° when turned. After calibration, the sensor should read 0° when the steering wheel is centered.
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 11. Inspect all related wiring and connectors for damage or corrosion. Fix any issues found.
- 22. Check the steering angle sensor itself for physical damage or debris. If damaged, replace the sensor.
- 33. If wiring and sensor are good, use a scan tool to verify existing angle readings while turning the steering wheel. Look for values outside of -90 to +90.
- 44. If readings are inaccurate, perform a calibration process using a scan tool that supports steering angle sensor calibration.
- 55. Clear DTCs and re-check for codes after calibration.
Common causes
- Uncalibrated steering angle sensor after a repair or battery disconnect
- Faulty steering angle sensor
- Wiring issues or faulty connectors at the steering angle sensor
Typical repair cost
$$
Related codes
Frequently asked questions
Can I drive the vehicle with this code?
Yes, but steering assist features may not work correctly, so drive with caution.
Will this code come back after clearing it?
If the underlying issue isn't fixed, the code will likely return after a short while.
Why is this related to the stability control system?
The steering angle sensor is critical for stability control, as it helps the system understand how the vehicle is responding to steering inputs.
Working a real vehicle right now?
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