Steering Angle Sensor Range/Performance
What does C0221 mean?
The C0221 code means the vehicle's onboard diagnostic system has detected: Steering Angle Sensor Range/Performance. This is a moderate severity code.
Common Symptoms
- Stability control light on
- Traction control warning
- Steering feels normal but ESC is disabled
- Warning may appear intermittently
- Advanced driver assist features disabled
Probable Causes (Ranked by Likelihood)
- Steering angle sensor out of calibration Very High
- Steering wheel not centered after alignment High
- Clock spring beginning to wear Moderate
- Loose or worn steering column components Moderate
- Sensor drift due to age Low
Step-by-Step Diagnostic Procedure
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Check steering angle sensor reading with wheels pointed straight -- should read near zero degrees
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Perform a steering angle sensor calibration procedure with a scan tool
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Verify the steering wheel is centered when driving straight
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Check for play in the steering column and intermediate shaft
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Drive in a straight line and verify sensor reads consistently near zero
Frequently Asked Questions
Can a simple calibration fix C0221?
In many cases, yes. A steering angle sensor calibration using a scan tool is the first step and often resolves this code, especially after alignment work or steering component replacement.
How is the steering angle sensor calibrated?
Calibration typically involves turning the steering wheel full lock-to-lock and centering it, then using a scan tool to command the calibration. The vehicle may also need to be driven in a straight line briefly.
Does an off-center steering wheel cause this code?
Yes. If the steering wheel is not centered when driving straight, the steering angle sensor will read an offset, causing range/performance issues. A proper alignment with steering wheel centering often resolves this.