What it means
A control module has received data from the steering angle sensor module that it considers invalid or implausible. Steering-related assistance or stability functions may be affected; the specific effects depend on the vehicle.
How it works
The steering angle sensor module measures steering wheel angle and reports it to stability and assistance systems. U0407 is set when a receiving module considers that angle or status data implausible or incompatible with its expected configuration.
Common causes
Most likely first.
- Implausible or incorrect steering angle sensor data
- Incorrect sensor calibration or configuration
- Intermittent network data corruption
Symptoms
- Multiple warning lights may illuminate
- Affected modules may go into limp mode or shut down
- Specific functions inoperative depending on module
- Diagnostic tools may show communication faults
How to diagnose it
- Scan all modules and save freeze-frame data to identify which systems rejected the steering angle data and whether calibration or communication codes are present.
- Check live steering angle data while turning the wheel and compare it with the actual wheel direction and steering position.
- Inspect the steering angle sensor module connectors and network wiring for looseness, corrosion, or damage.
- Check for recent steering, alignment, or battery work that may have left the sensor incorrectly calibrated or configured.
- If wiring and power are sound, verify the sensor module configuration and carry out the vehicle-specified calibration procedure.
Common fixes
- Repair damaged steering angle sensor wiring or connectors.
- Calibrate the steering angle sensor using the vehicle's specified procedure.
- Correct incompatible sensor module software or configuration.
- Replace a faulty steering angle sensor module after confirming its data is invalid.
Can I keep driving?
Stability control or steering assistance may be reduced or disabled, even if the vehicle still steers normally. Drive cautiously and avoid relying on stability aids; stop if steering effort or vehicle direction changes unexpectedly.
A code shows where the control module detected a fault, not always which part failed. Check the causes in order and confirm with a test before replacing parts. Have several codes? Check them together
This is a generic code: it means the same on every make. The car’s maker may add more detail in its own service information.