U0126
U0126-LOST COMMUNICATION WITH STEERING ANGLE SENSORWhen Monitored
- With the ignition on
- Battery voltage between 10 and 16 volts
- IOD fuse installed
- FCM is configured correctly
Set Condition
Bus messages not received from the Steering Angle Sensor for approximately 500ms.
Possible Causes
- CAN B OR CAN C BUS CIRCUITS OPEN OR SHORTED
- DTCS RELATED TO BATTERY VOLTAGE, IGNITION, OR VIN MESSAGES
- FCM NOT CONFIGURED CORRECTLY
- STEERING ANGLE SENSOR
- STEERING ANGLE SENSOR POWER AND GROUND
- MODULE THAT SET THIS DTC
Diagnostic Test
1. VERIFY DTC IS ACTIVE
NOTE: Ensure the IOD fuse is installed and battery voltage is between 10 and 16 volts before proceeding.
With the scan tool, read active DTCs.
Is this DTC active?
Yes >> Go To 2.
No >> Refer to the Stored Lost Communication test procedure.
Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
2. VERIFY THAT THE STEERING ANGLE SENSOR IS ACTIVE ON THE BUS
Turn the ignition on.
With the scan tool, select Network Diagnostics.
Verify that the Steering Angle Sensor is active on the bus.
Is the Steering Angle Sensor active on the bus?
Yes >> Go To 3.
No >> Refer to Body Control Systems for a no response test procedure.
Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
3. STEERING ANGLE SENSOR
Replace the Steering Angle Sensor.
Perform ABS VERIFICATION TEST - VER 1. ABS Verification Test
With the scan tool, read ABS DTCs.
Did DTC U0126-LOST COMMUNICATION WITH STEERING ANGLE SENSOR reset?
Yes >> Replace the Anti-Lock Brakes Module.
Perform ABS VERIFICATION TEST - VER 1. ABS Verification Test
No >> Test Complete.