Steering Angle Sensor Performance Problem
The steering angle sensor is reporting a performance issue.
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 measures how much the steering wheel is turned. If it sends out signals that don't match what the computer expects, it indicates a problem with the sensor or its connection.
What the computer is actually seeing
The computer expects the steering angle sensor to report a voltage change within a specific range when the steering wheel is turned. When it reads the same value or goes out of expected limits unexpectedly, it triggers this code.
What a healthy reading looks like
Steering angle sensor voltages should change from 0.5V (centered) to 4.5V (full left or right) as you turn the steering wheel.
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 wiring and connectors for the steering angle sensor for any visible damage or corrosion.
- 2Use a multimeter to check the voltage output from the steering angle sensor while turning the wheel. It should vary between 0.5V and 4.5V.
- 3If the voltage readings are stable or outside this range, replace the steering angle sensor and calibrate it afterwards.
- 4If the sensor checks out, inspect the vehicle's alignment and ensure it's been done properly to avoid sensor recalibration issues.
Common causes
- Faulty steering angle sensor
- Loose or corroded connector
- Wiring damage between sensor and control module
- Calibration issue after wheel alignment
Typical repair cost
$$
Related codes
Frequently asked questions
Can I still drive the vehicle with this code?
Yes, but steering assist features might be disabled, affecting drivability.
Will this problem come back after I clear the code?
If the underlying issue isn't fixed, the code will likely return.
Why does this code sometimes pair with C0278?
C0278 also relates to steering angle sensor issues; both indicate performance problems likely caused by similar factors.
Working a real vehicle right now?
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