U11FA Code - Lost Communication With Right Blind Spot Sensor
Quick Answer
The Blind Spot Monitor (BSM) system has two primary components; a Left Blind Spot Sensor (LBSS) and Right Blind Spot Sensor (RBSS). Common causes include Faulty Right Blind Spot Sensor, Right Blind Spot Sensor harness is open or shorted, Right Blind Spot 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
- U11FA indicates Lost Communication With Right Blind Spot Sensor.
- Common causes
- Common causes include Faulty Right Blind Spot Sensor, Right Blind Spot Sensor harness is open or shorted, Right Blind Spot 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 U11FA Description
The microprocessor analyzes the sensor data to determine whether any detected objects should be reported. When it is determined that an object should be reported, the Sensor controls its respective left or right BSM display directly through a hard wired output to the Outside Rearview Mirrors. The sensor also sends an electronic request message over the CAN Bus to the radio. The Radio then mutes any current output through the speakers and generates a chime as an audible alert.
Each sensor performs a bulb test by illuminating the triangle icon in the Outside Rearview Mirror at each ignition ON cycle.
The Diagnostic Trouble Code (DTC) sets when no BUS messages from the Right Blind Spot Sensor (RBSS) are received for greater than 1.05 seconds.
What are the Possible Causes of the DTC U11FA?
- Faulty Right Blind Spot Sensor
- Right Blind Spot Sensor harness is open or shorted
- Right Blind Spot Sensor circuit poor electrical connection
How to Fix the DTC U11FA?
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 U11FA 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
- U11FA Chrysler — Lost Communication With Right Blind Spot Sensor
- U11FA Dodge — Lost Communication With Right Blind Spot Sensor
- U11FA Fiat — Lost Communication With Right Blind Spot Sensor
- U11FA Jeep — Lost Communication With Right Blind Spot Sensor
- U11FA RAM — Lost Communication With Right Blind Spot Sensor
Frequently Asked Questions about U11FA Code
1. What are common symptoms of OBDII code U11FA (Lost Communication With Right Blind Spot Sensor)?
- Common symptoms include a malfunction indicator light (MIL) on the dashboard, loss of functionality of the right blind spot sensor, and potential warning messages related to the blind spot monitoring system.
2. What are possible causes of OBDII code U11FA?
- Possible causes include a faulty right blind spot sensor, damaged wiring or connectors related to the sensor, corrosion or water damage, or a communication issue within the vehicle's network.
3. How can I diagnose the issue with the right blind spot sensor causing code U11FA?
- Diagnose the issue by checking the wiring and connectors for damage, ensuring the sensor is securely mounted, inspecting for any signs of water damage, and using a diagnostic scan tool to communicate with the sensor.
4. Can I still drive my vehicle with OBDII code U11FA present?
- It is generally safe to drive the vehicle with this code present, but it is recommended to address the issue promptly to ensure the proper functioning of the blind spot monitoring system.
5. How can I repair OBDII code U11FA (Lost Communication With Right Blind Spot Sensor)?
- Repair options include replacing the right blind spot sensor if it is found to be faulty, repairing any damaged wiring or connectors, clearing the code with a diagnostic tool, and ensuring all connections are secure.
6. Is it possible for other sensors or modules to cause code U11FA to appear?
- Yes, communication issues with other sensors or modules in the vehicle's network can potentially trigger code U11FA, so it is important to perform a thorough diagnostic check to pinpoint the exact cause.
7. Will disconnecting the battery reset OBDII code U11FA?
- Disconnecting the battery may temporarily clear the code, but it is recommended to address the underlying issue causing the communication error with the right blind spot sensor to prevent the code from reappearing.
8. How sensitive is the right blind spot sensor to external factors that could trigger code U11FA?
- The right blind spot sensor is sensitive to factors like water damage, physical damage, and electrical issues, so it is important to keep the sensor and its components well-maintained to prevent communication errors.
9. Can a DIY enthusiast troubleshoot and repair OBDII code U11FA at home?
- While some basic troubleshooting steps can be performed at home, diagnosing and repairing communication issues with the right blind spot sensor may require specialized tools and expertise, so professional help may be necessary.
10. Are there any recalls or technical service bulletins related to OBDII code U11FA for specific vehicle models?
- It is advisable to check with the vehicle manufacturer or authorized service centers for any relevant recalls or technical service bulletins related to OBDII code U11FA, as there may be specific repair instructions or updates available.
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