U2623 – Lost Communication with the Steering Angle Sensor.
The ODBII code U2623 indicates a loss of communication between the vehicle’s control module and the steering angle sensor, which may affect the vehicle’s stability control and steering functions.
The severity of ODBII code U2623 is generally considered moderate.
Common Causes For: U2622 Invalid Data Received from the Steering Angle Sensor.
- Faulty steering angle sensor
- Damaged wiring or connectors
- Poor electrical connections
- Malfunctioning steering column control module
- Software issues or calibration errors
- Low battery voltage or power supply issues
- Interference from other electronic components
Common misdiagnosis for U2623 Lost Communication with the Steering Angle Sensor.
- Faulty Steering Angle Sensor
- Wiring issues or damaged connectors
- Faulty Electronic Control Unit (ECU)
- Incorrectly calibrated steering angle sensor
- Issues with the vehicle’s stability control system
- Problems with the power steering system
- Faulty wheel speed sensors
- Software glitches in the vehicle’s control modules
Common Troubleshooting Steps
When dealing with the OBD-II code U2623, 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 Additional Codes: Use an OBD-II scanner to check for any other related trouble codes. This can provide more context and help identify if there are other issues present.
- 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 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. Check for proper voltage and signal output.
- **Calibration: Some vehicles require the steering angle sensor to be calibrated after installation or repair. Refer to the vehicle’s service manual for calibration procedures.
- 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 at the sensor connector.
- Inspect the CAN Bus: Since the steering angle sensor communicates over the CAN (Controller Area Network) bus, check for any issues with the CAN wiring or other modules on the bus.
- Look for shorts, opens, or high resistance in the CAN lines.
- Check for Interference: Ensure that there are no aftermarket devices or modifications that could be interfering with the communication between the steering angle sensor and the vehicle’s control modules.
- Scan Tool Data: Use a scan tool to monitor live data from the steering angle sensor. Look for any irregularities in the readings when turning the steering wheel.
- Inspect Other Related Components: Check other components that may affect the steering angle sensor, such as the steering column, steering rack, or any related control modules.
- Clear Codes and Test Drive: After performing the above checks and repairs, clear the trouble codes and take the vehicle for a test drive to see if the code returns.
- Consult Service Manual: If the issue persists, consult the vehicle’s service manual for specific diagnostic procedures related to the steering angle sensor and the U2623 code.1
- Professional Help: If you are unable to resolve the issue after these steps, consider seeking help from a professional mechanic or automotive technician who has experience with your specific vehicle make and model. By following these steps, you should be able to identify the root cause of the U2623 code and take appropriate action to resolve the communication issue with the steering angle sensor.