U0126 code meaning
Lost Communication With Steering Angle Sensor Module
Network system Generic code U01xx codes Check engine light
What U0126 means
U0126 means the steering wheel angle sensor, usually mounted on the steering column, is no longer heard on the bus. ESC needs this value to know the path the driver intends. Mitsubishi's 2019 Outlander PHEV sets U0126 in the PHEV-ECU when it loses its CAN link to the wheel-angle sensor and demands calibration after a sensor swap. Mercedes reports U012600 with check-engine lamp after remote start, traced to software and the column module (LI27.00-P-073106). GM PIT5755 warns that some 2020 Silverado HD brake controllers log the same fault as U0131. Saab's list uses symptom bytes 71/72/74/5A. U0428 covers invalid angle data. Expect ESC warnings, sometimes a MIL.
U0126 at a glance
- Check engine lightYes, usually on
- Emissions testNot an emissions code
- Limp modeNot expected
- Repair difficultyMedium
- Typical labor0.5 to 3 hours
- Clears after repairWhen cleared with a scanner
Symptoms of U0126
- ESC and traction lamps on, stability control inactive
- Check engine lamp on some models
- Lane or park assist functions unavailable
Common causes of U0126
- Most likelyLoose or damaged connector or clock-spring harness at the steering column
- PossiblePower or ground of the steering angle sensor missing
- PossibleModule software reporting the fault wrongly or after remote start (update)
- Less likelySteering angle sensor faulty; recalibration needed after replacement
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Steering angle sensorCAN bus wiring
What each part of U0126 means
| U | Network system: communication between the control modules (CAN bus). |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 26 | The exact fault in that area. |
What to do next
- Note U0126 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about U0126
What does U0126 mean?
U0126 means "Lost Communication With Steering Angle Sensor Module". U0126 means the steering wheel angle sensor, usually mounted on the steering column, is no longer heard on the bus. It is a generic code, so it means the same on every make.
Is it safe to drive with U0126?
Usually yes, for a short time, if the check engine light is steady and the car drives normally. If the light flashes or the car runs badly, stop and have it checked.
Will U0126 fail an emissions test?
U0126 is not an emissions code, so on its own it usually does not fail an emissions test. Other stored codes or a lit check engine light still can.
How hard is U0126 to fix?
Difficulty: medium. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will U0126 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.