U2135 – Lost Communication with the Steering Angle Sensor Module.

The ODBII code U2135 indicates that there is a loss of communication between the vehicle’s control module and the steering angle sensor module, which may affect the vehicle’s stability control and steering functions.

The severity of ODBII code U2135 is generally considered moderate to high.

Common Causes For: U2134 U2134: Vehicle Communication Bus Malfunction

• Faulty steering angle sensor
• Damaged wiring or connectors
• Poor electrical connections
• Malfunctioning vehicle control module
• Software issues or updates needed
• Low battery voltage
• Corroded terminals or connectors
• Interference from aftermarket devices

Common misdiagnosis for U2135 Lost Communication with the Steering Angle Sensor Module.

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

Common Troubleshooting Steps

When dealing with the OBD-II code U2135, which indicates “Lost Communication with the Steering Angle Sensor Module,” 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 about the issue.
• Inspect Wiring and Connectors: **Visual Inspection: Check the wiring harness and connectors related to 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 pushed back.
• 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.
• **Calibration: Some vehicles require the steering angle sensor to be calibrated after installation or repair. Check the vehicle’s service manual for calibration procedures.
• Check Power and Ground: **Power Supply: Verify that the steering angle sensor is receiving the correct voltage. Use a multimeter to check the power supply at the sensor connector.
• **Ground Connection: Ensure that the ground connection for the sensor is intact and has a good connection.
• Inspect the CAN Bus: **Communication Lines: Since the steering angle sensor communicates over the CAN bus, check for any issues with the CAN wiring. Look for shorts, opens, or interference.
• **CAN Bus Termination: Ensure that the CAN bus is properly terminated at both ends.
• Check for Software Issues: **Updates: Check if there are any software updates available for the vehicle’s ECU that may address communication issues.
• **Resetting Codes: Clear the trouble codes and see if the U2135 code returns. Sometimes, a temporary glitch can cause communication issues.
• Inspect Related Modules: **Other Modules: Check if other modules that communicate with the steering angle sensor are functioning properly. A fault in another module can sometimes affect communication.
• **Intermittent Issues: Look for intermittent issues that may not always trigger a code but can cause communication loss.
• 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. Manufacturers may have known fixes for common problems.
• Professional Diagnosis: If the issue persists after performing the above steps, consider seeking help from a professional mechanic or dealership. They may have specialized tools and knowledge to diagnose complex communication issues.Conclusion By following these troubleshooting steps, you can systematically identify and resolve the issue related to the U2135 code. Always refer to the vehicle’s service manual for specific procedures and specifications related to your vehicle.