Network
generic / SAE
U0126
Lost Communication with Steering Angle Sensor Module
The Steering Angle Sensor Module has stopped transmitting on the vehicle data bus, so other control units no longer receive its messages. Stability control loses the steering-angle reference and usually disables ESC. Typical causes are loss of power or ground at the module, an open or shorted CAN/LIN bus wire, a connector fault, or an internal module failure.
SystemNetwork
Typegeneric / SAE
GroupU0
Range / number1 / 26
Possible causes
- Steering angle sensor unpowered high
- Clockspring (in steering column) failed medium
- Gateway module routing CAN messages incorrectly low
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
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 100–900 €
- Estimated time: 1–3 h
- Component: steering angle sensor
- Component: can bus wiring
- MIL / check engine light
Sources
References
sae:J2012