Steering Angle Sensor Circuit Malfunction
The steering angle sensor is reporting a fault in its circuit.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
The steering angle sensor tells the computer how far the steering wheel is turned. If this sensor isn't working right, the system can't adjust things like traction control and stability management properly.
What the computer is actually seeing
The steering angle sensor sends a voltage signal that varies with the angle of the steering wheel. If this voltage is out of range (typically between 0.5V and 3.5V), the computer sees a fault and sets the C0679 code.
What a healthy reading looks like
Steering angle should change the voltage between 0.5V to 4.5V as the wheel is turned.
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.
- 1Check the vehicle wiring harness for any signs of damage or wear. Use a multimeter to verify continuity on the wires leading to the sensor (should read near 0 ohms).
- 2Inspect the connector at the steering angle sensor for corrosion or loose connections. Clean or replace as necessary.
- 3Check the steering angle sensor output voltage with a scan tool or multimeter. With the wheel centered, it should be around 2.5V. If out of range, consider testing or replacing the sensor.
Common causes
- Damaged wiring to the steering angle sensor
- Faulty steering angle sensor
- Poor electrical connections or corrosion
- Steering column modifications affecting sensor operation
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's generally safe to drive, but you may experience traction control issues and reduced stability, especially in slippery conditions.
Will this code come back after I reset it?
If the underlying issue isn't fixed, yes, the code will likely return after a short time.
Why does this code pair with other codes?
Other related codes indicate potential issues with the steering system, including associated sensors/components that may also be failing.
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