U2143 Code - Lost Communications With Steering Angle Sensor
Quick Answer
Devices connected to the serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Steering Angle Sensor (SAS), Steering Angle Sensor harness is open or shorted, Steering Angle Sensor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- U2143 indicates Lost Communications With Steering Angle Sensor.
- Common causes
- Common causes include Faulty Steering Angle Sensor (SAS), Steering Angle Sensor harness is open or shorted, Steering Angle Sensor circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code U2143 Description
What are the Possible Causes of the DTC U2143?
- Faulty Steering Angle Sensor (SAS)
- Steering Angle Sensor harness is open or shorted
- Steering Angle Sensor circuit poor electrical connection
How to Fix the DTC U2143?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the U2143 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Information for Specific Makes
- U2143 Buick — Lost Communications With Steering Angle Sensor
- U2143 Cadillac — Lost Communications With Steering Angle Sensor
- U2143 Chevrolet — Lost Communications With Steering Angle Sensor
- U2143 GMC — Lost Communications With Steering Angle Sensor
- U2143 Pontiac — Lost Communications With Steering Angle Sensor
Frequently Asked Questions about U2143 Code
1. What are the common symptoms of OBDII code U2143 (Lost Communications With Steering Angle Sensor)?
The common symptoms include the traction control light or stability control light turning on, erratic steering behavior, and potential loss of power steering assistance.
2. What are the possible causes of OBDII code U2143?
Possible causes of this code include a faulty steering angle sensor, damaged wiring or connectors in the steering angle sensor circuit, or a malfunctioning electronic control module.
3. How can I diagnose the issue related to OBDII code U2143?
Diagnosing the issue involves using a diagnostic scan tool to retrieve the code, checking the wiring and connectors for any damage, and testing the steering angle sensor for proper functionality.
4. Can I still drive my vehicle with OBDII code U2143?
It is not recommended to drive the vehicle with this code present, as it can affect the stability and control systems of the vehicle. It is best to address the issue promptly.
5. How can I reset OBDII code U2143?
Resetting the code involves using a diagnostic scan tool to clear the code after the underlying issue has been diagnosed and repaired.
6. Is it possible to repair OBDII code U2143 on my own?
While it is possible to address some aspects of the issue, diagnosing and repairing the root cause of the code may require professional diagnostic equipment and expertise.
7. Can a low battery voltage trigger OBDII code U2143?
Yes, low battery voltage or electrical issues in the vehicle can sometimes lead to communication errors between the steering angle sensor and the control module, triggering this code.
8. How much does it typically cost to repair OBDII code U2143?
The cost of repair can vary depending on the specific cause of the issue, but it may involve replacing the steering angle sensor, repairing damaged wiring, or reprogramming the electronic control module.
9. Will OBDII code U2143 cause my vehicle to fail an emissions test?
While this code itself may not directly impact emissions, it is still important to address it to ensure the proper functioning of the vehicle's safety and stability systems.
10. How long can I safely drive with OBDII code U2143 before getting it repaired?
It is recommended to address the issue as soon as possible to avoid potential safety hazards and further damage to the vehicle's systems.
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