U2016 – Lost Communication with the Steering Angle Sensor.

The ODBII code U2016 indicates a loss of communication with the steering angle sensor, which may affect the vehicle’s stability control and steering response systems.

The severity of ODBII code U2016 is generally considered moderate.

Common Causes For: U2015 Signal Link Fault (Non SCP)

• Faulty steering angle sensor
• Damaged wiring or connectors
• Poor electrical connections
• Malfunctioning power steering control module
• Software issues or calibration errors
• Low battery voltage or electrical system issues
• Interference from aftermarket devices or modifications

Common misdiagnosis for U2016 Lost Communication with the Steering Angle Sensor.

• Faulty Steering Angle Sensor
• Wiring issues or damaged connectors
• Faulty Body Control Module (BCM)
• Faulty Electronic Power Steering (EPS) module
• Incorrectly calibrated steering angle sensor
• Issues with the vehicle’s CAN bus system
• Faulty ABS module
• Software or firmware issues in the vehicle’s control modules

Common Troubleshooting Steps

When dealing with the OBD-II code U2016, which indicates “Lost Communication with the Steering Angle Sensor,” there are several common troubleshooting steps you can follow to diagnose and potentially resolve the issue. Here’s a structured approach:

• Check for Other Codes: Use an OBD-II scanner to check for any additional trouble codes. Sometimes, related codes can provide more context for the issue.
• Inspect Wiring and Connectors: **Visual Inspection: Check the wiring harness and connectors associated with the steering angle sensor for any signs of damage, corrosion, or loose connections.
• **Connector Pins: Ensure that the pins in the connectors are not bent or corroded.
• Test the Steering Angle Sensor: **Sensor Functionality: If possible, test the steering angle sensor using a multimeter or scan tool to ensure it is functioning correctly.
• **Resistance and Voltage: Measure the resistance and voltage output of the sensor according to the manufacturer’s specifications.
• Check Power and Ground: Verify that the steering angle sensor is receiving the correct voltage and has a good ground connection. Use a multimeter to check for power and ground at the sensor connector.
• Inspect the CAN Bus: Since the steering angle sensor communicates over the CAN bus, check for any issues with the CAN network.
• **Termination Resistors: Ensure that the CAN bus termination resistors are present and functioning correctly.
• **Signal Integrity: Use an oscilloscope to check the signal integrity on the CAN bus lines.
• Look for Intermittent Issues: Sometimes, the issue may be intermittent. Pay attention to when the code appears (e.g., during specific driving conditions) and check for any patterns.
• Check for Software Updates: Check if there are any software updates available for the vehicle’s ECU that may address communication issues with the steering angle sensor.
• Clear Codes and Test Drive: After performing the above checks and repairs, clear the codes and take the vehicle for a test drive to see if the code returns.
• Consult Technical Service Bulletins (TSBs): Look for any TSBs related to the steering angle sensor or communication issues for your specific vehicle make and model.
• Professional Diagnosis: If the issue persists after performing the above steps, consider seeking help from a professional mechanic or dealership, as they may have specialized tools and knowledge to diagnose the problem further. By following these steps, you should be able to identify the cause of the U2016 code and take appropriate action to resolve the issue.