B1140 Toyota Code - Side Airbag Sensor Assembly Malfunction
Quick Answer
The Side Airbag Sensor Assembly (Right Side) consists of the safing sensor, diagnosis circuit, and lateral deceleration sensor, etc. Common causes include Faulty Side Airbag Sensor Assembly (Right Side), Side Airbag Sensor Assembly (Right Side) harness is open or shorted, Side Airbag Sensor Assembly (Right Side) 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
- B1140 Toyota indicates Side Airbag Sensor Assembly Malfunction.
- Common causes
- Common causes include Faulty Side Airbag Sensor Assembly (Right Side), Side Airbag Sensor Assembly (Right Side) harness is open or shorted, Side Airbag Sensor Assembly (Right Side) 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 B1140 Toyota Description
What are the Possible Causes of the DTC B1140 Toyota?
- Faulty Side Airbag Sensor Assembly (Right Side)
- Side Airbag Sensor Assembly (Right Side) harness is open or shorted
- Side Airbag Sensor Assembly (Right Side) circuit poor electrical connection
- Faulty Airbag Sensor Assembly Center
How to Fix the DTC B1140 Toyota?
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 B1140 Toyota 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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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 B1140 Toyota Code
1. What are common symptoms of OBDII code B1140 Toyota (Side Airbag Sensor Assembly Malfunction)?
- Common symptoms include the airbag warning light illuminating on the dashboard and potential issues with the side airbag system.
2. What causes the OBDII code B1140 Toyota to trigger?
- The code B1140 typically triggers due to a malfunction in the side airbag sensor assembly, which can be caused by wiring issues, sensor failure, or impact damage.
3. How can I diagnose the OBDII code B1140 Toyota at home?
- While diagnosing this code may require specialized tools, you can start by checking the side airbag sensor connectors for any visible damage or loose connections.
4. Can I still drive my Toyota with the OBDII code B1140?
- It is not recommended to drive the vehicle with the airbag warning light on, as it indicates a potential safety issue with the side airbag system. Have the issue diagnosed and repaired as soon as possible.
5. How much does it cost to repair the OBDII code B1140 Toyota?
- The cost of repair can vary depending on the exact cause of the malfunction. It is recommended to consult a professional mechanic for an accurate diagnosis and cost estimate.
6. Are there any safety concerns associated with the OBDII code B1140 Toyota?
- Yes, the code B1140 indicates a malfunction in the side airbag sensor assembly, which can affect the proper deployment of the side airbags in the event of a collision. It is important to address this issue promptly.
7. Can I reset the OBDII code B1140 Toyota on my own?
- While you can try resetting the code using an OBDII scanner, it is important to address the underlying issue causing the code to prevent it from reoccurring.
8. Is the OBDII code B1140 Toyota a common issue with certain Toyota models?
- The code B1140 may be more common in certain Toyota models that have been known to experience issues with the side airbag sensor assembly. Check with your dealership for any related recalls or service bulletins.
9. How long does it typically take to repair the OBDII code B1140 Toyota?
- The repair time can vary depending on the exact cause of the issue and the availability of parts. It is best to consult with a professional mechanic for a more accurate time estimate.
10. Can I prevent the OBDII code B1140 Toyota from occurring in the future?
- Regular maintenance and inspection of the side airbag system can help prevent issues that may trigger the code B1140. Addressing any wiring or sensor issues promptly can also help prevent future malfunctions.
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