Lost Communication With Steering Angle Sensor Module
What it means
U0126 means the vehicle has lost communication with the steering angle sensor — the module that tells stability and driver-assist systems where the wheels are pointed. The car still steers normally, but without this data the stability control, traction control, and lane-keeping systems typically shut off and light up warnings. Common causes are wiring or connector faults at the sensor, a missing calibration after service, or a failed sensor module.
Can I keep driving? Drivable — steering itself still works, but stability control, traction control, and lane-keeping systems that need steering-angle data will likely be disabled.
Real-world scan data
Appears alongside · share of U0126 scans
Figures reflect only diagnostic scans recorded through our own apps and tools. Cars are typically scanned because a symptom or warning light prompted it, so these counts describe our scan records — not the incidence of faults in any model, and not the quality, reliability, or safety of any vehicle. No comparison between manufacturers or models is implied. All trademarks belong to their respective owners; no affiliation or endorsement is implied.
Common symptoms
What you'll notice
- ABS, traction control, and stability control (ESC) warning lights on
- Stability/traction control and lane-keep assist disabled
- Electric power steering warning or altered assist on some vehicles
- Steering angle reads as unavailable to the scan tool
Common causes
Most likely first
- Damaged or corroded CAN wiring/connector at the steering angle sensorLikely
- No power or ground to the steering angle sensor moduleCommon
- Sensor that needs recalibration after battery, alignment, or clockspring serviceCommon
- Internally failed steering angle sensor moduleLess often
How to diagnose & fix
Work through it in order
- Scan all modules to confirm the steering angle sensor is missing and check for related bus codes.
- Inspect the sensor's connector and CAN wiring (often at the clockspring/steering column) for damage and corrosion.
- Check power and ground to the module.
- Perform the steering-angle sensor calibration procedure — many faults clear after a proper relearn.
- If it still doesn't communicate, replace the sensor module and recalibrate, then clear and re-test.
FAQ
Quick answers
Is it safe to drive with U0126?+
Can I just clear U0126?+
Related codes
Read & clear U0126 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.