U2855 – Lost Communication with the Steering Angle Sensor.

The ODBII code U2855 indicates a loss of communication with the steering angle sensor, which may affect the vehicle’s stability control and steering functions.

The severity of ODBII code U2855 is generally considered moderate.

Common Causes For: U2851 Lost Communication with the Steering Angle Sensor.

• Faulty steering angle sensor
• Damaged wiring or connectors
• Poor electrical connections
• Malfunctioning vehicle control module
• Software issues or outdated firmware
• Interference from other electronic components
• Corrosion or dirt on connectors
• Incorrect sensor calibration

Common misdiagnosis for U2855 Lost Communication with the Steering Angle Sensor.

• Faulty Steering Angle Sensor
• Wiring Issues or Short Circuits
• Faulty Body Control Module (BCM)
• Faulty Electronic Power Steering (EPS) Module
• Incorrectly Calibrated Steering Angle Sensor
• Faulty Instrument Cluster
• Issues with the CAN Bus Communication
• Battery or Grounding Problems

Common Troubleshooting Steps

When dealing with OBD-II code U2855, 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, multiple 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, corroded, or damaged.
• 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. Check for proper voltage and signal output.
• **Replacement: If the sensor is faulty, consider replacing it.
• Check the 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 bus wiring. Look for shorts, opens, or other faults in the wiring.
• Use a scan tool to monitor the CAN bus for any communication issues.
• Check for Software Updates: Sometimes, manufacturers release software updates that can resolve communication issues. Check if there are any updates available for your vehicle’s ECU.
• Clear Codes and Test Drive: After performing the above checks and repairs, clear the trouble codes using the OBD-II scanner and take the vehicle for a test drive to see if the code returns.
• Consult Service Manual: Refer to the vehicle’s service manual for specific diagnostic procedures related to the steering angle sensor and communication protocols.
• 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 complex issues.Conclusion By following these troubleshooting steps, you can systematically identify and resolve the issue related to the U2855 code. Always ensure safety precautions are taken when working on vehicle electrical systems.