What does it mean?
U2017 is a Network (CAN bus, module communications) fault code. It indicates: Driver-side Side Air Bag Sensor System Communication Error .
Symptoms
- Airbag warning lamp permanently on
- Driver-side airbag and curtain disabled
- Belt pretensioners may also be inhibited
- Warning message about the restraint system on the display
- The fault returns immediately after clearing
- Vehicle fails inspection while the airbag lamp is lit
Likely causes
- Loose or corroded connector at the driver-side impact sensor in the door or B-pillar
- Wiring damaged in the door or sill area, especially where it flexes with the door
- Failed side impact sensor
- Water in the door or on the floor reaching the sensor connector
- Restraint control module fault, or its own poor power feed and ground
- Damage left over from a previous accident or an incomplete airbag repair
- Aftermarket speaker or alarm wiring routed through the door harness
How to fix it
- Read the restraint module and confirm whether the fault is current or stored
- Inspect the door and sill harness, flexing the door boot while looking for broken wires
- Unplug and inspect the sensor connector for corrosion, moisture and an unlatched lock
- Test the sensor circuit for continuity and short to ground back to the restraint module
- Find and fix any water leak into the door or footwell before repairing the circuit
- Confirm the sensor is bolted to the body at the specified torque
- Replace the impact sensor; consider the restraint control module only if the circuit tests good