B1111 Code - Diagnosis Sensor Unit
Quick Answer
The Air Bag Diagnosis Sensor Unit detects the whole SRS electrical system and displays the malfunction either by illuminating or blinking the air bag warning lamp in the combination meter. Common causes include Faulty Diagnosis Sensor Unit, Diagnosis Sensor Unit harness is open or shorted, Diagnosis Sensor Unit 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
- B1111 indicates Diagnosis Sensor Unit.
- Common causes
- Common causes include Faulty Diagnosis Sensor Unit, Diagnosis Sensor Unit harness is open or shorted, Diagnosis Sensor Unit 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 B1111 Description
The Air Bag Diagnosis Sensor Unit contains the “G†sensors for both frontal and side collisions and spare battery function in case of main battery damaged in a collision.
What are the Possible Causes of the DTC B1111?
- Faulty Diagnosis Sensor Unit
- Diagnosis Sensor Unit harness is open or shorted
- Diagnosis Sensor Unit circuit poor electrical connection
How to Fix the DTC B1111?
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 B1111 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.
Need more information about the B1111 code?
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Need Help with the Code?
Get the B1111 code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- B1111 Ford — Driver Thermal Electric Device Control Overtemperature Fault
- B1111 Infiniti — Diagnosis Sensor Unit
- B1111 Lincoln — Driver Thermal Electric Device Control Overtemperature Fault
- B1111 Mercury — Driver Thermal Electric Device Control Overtemperature Fault
- B1111 Nissan — Diagnosis Sensor Unit
Precautions for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” Service
- Never probe the electrical connectors on air bag, side air curtain modules or seat belts.
- Never disassemble or tamper with safety belt buckle/retractor pretensioners, adaptive load limiting retractors, safety belt inflators, or probe the electrical connectors.
- Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
- Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 minutes. For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes have passed.
Failure to follow this instruction may result in the accidental deployment of these modules, which increases the risk of serious personal injury or death.
Frequently Asked Questions about B1111 Code
1. What are the common symptoms of OBDII code B1111 related to the Diagnosis Sensor Unit?
- Common symptoms include issues with the vehicle's sensors, unusual dashboard warning lights, and potential difficulties in diagnosing other problems.
2. What are the possible causes of OBDII code B1111 related to the Diagnosis Sensor Unit?
- Causes may include faulty wiring, sensor malfunctions, issues with the control module, or a damaged Diagnosis Sensor Unit itself.
3. How can I diagnose OBDII code B1111 related to the Diagnosis Sensor Unit?
- Diagnosis involves using a diagnostic scanner to retrieve the specific fault code, conducting a visual inspection of related components, and testing the sensors and wiring for continuity.
4. What repair tips can help resolve OBDII code B1111 related to the Diagnosis Sensor Unit?
- Repair tips include checking and repairing any damaged wiring, replacing faulty sensors, resetting the control module, and ensuring proper connection of the Diagnosis Sensor Unit.
5. Is it safe to continue driving with OBDII code B1111 related to the Diagnosis Sensor Unit?
- It is generally not recommended to continue driving with this code present, as it can lead to further malfunctions and potential safety hazards.
6. Can resetting the vehicle's computer system clear OBDII code B1111 related to the Diagnosis Sensor Unit?
- Resetting the computer system may temporarily clear the code, but it is important to diagnose and repair the underlying issue to prevent the code from reappearing.
7. How much does it typically cost to repair OBDII code B1111 related to the Diagnosis Sensor Unit?
- Repair costs can vary depending on the specific cause of the code, but they may range from a few hundred to a few thousand dollars, including parts and labor.
8. What should I do if OBDII code B1111 related to the Diagnosis Sensor Unit keeps coming back after repairs?
- If the code persists after repairs, it is recommended to recheck the Diagnosis Sensor Unit, sensors, and wiring for any overlooked issues, or consult a professional mechanic for further assistance.
9. Can a DIY enthusiast fix OBDII code B1111 related to the Diagnosis Sensor Unit?
- DIY enthusiasts with the necessary tools and experience may be able to diagnose and repair this code, but it is recommended to consult a professional if unsure of the proper procedures.
10. Are there any recalls or technical service bulletins related to OBDII code B1111 and the Diagnosis Sensor Unit?
- It is advisable to check with the vehicle manufacturer or authorized dealerships for any recalls or technical service bulletins specific to this code and the Diagnosis Sensor Unit.
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