B1638 2016 Toyota RAV4 Code - Rear Airbag Sensor Assembly Left Initialization Incomplete
Quick Answer
The Side Collision Sensor Left (LH) circuit (to determine deployment of the Curtain Shield Airbag Assembly LH) is composed of the Center Airbag Sensor Assembly, Side Airbag Sensor LH, and Rear Airbag Sensor LH. Common causes include Faulty Rear Airbag Sensor Left (LH), Rear Airbag Sensor Left harness is open or shorted, Rear Airbag Sensor Left 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
- B1638 2016 Toyota RAV4 indicates Rear Airbag Sensor Assembly Left Initialization Incomplete.
- Common causes
- Common causes include Faulty Rear Airbag Sensor Left (LH), Rear Airbag Sensor Left harness is open or shorted, Rear Airbag Sensor Left 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 B1638 2016 Toyota RAV4 Description
What are the Possible Causes of the DTC B1638 2016 Toyota RAV4?
- Faulty Rear Airbag Sensor Left (LH)
- Rear Airbag Sensor Left harness is open or shorted
- Rear Airbag Sensor Left circuit poor electrical connection
- Faulty Center Airbag Sensor Assembly
How to Fix the DTC B1638 2016 Toyota RAV4?
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 B1638 2016 Toyota RAV4 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 B1638 2016 Toyota RAV4 code?
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Need Help with the Code?
Get the B1638 2016 Toyota RAV4 code diagnosed by a professional: Find a repair shop in your area
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 B1638 2016 Toyota RAV4 Code
1. What are the common symptoms of OBDII code B1638 on a 2016 Toyota RAV4?
The common symptoms include the airbag warning light staying illuminated on the dashboard, potential non-deployment of the left rear airbag during a collision, and a diagnostic trouble code indicating "Rear Airbag Sensor Assembly Left Initialization Incomplete."
2. What could cause the OBDII code B1638 on a 2016 Toyota RAV4?
The code B1638 is often triggered by a fault in the left rear airbag sensor assembly, which may be due to a wiring issue, sensor malfunction, or poor connection. Other potential causes include water damage, corrosion, or impact damage affecting the sensor.
3. How can I diagnose the issue related to OBDII code B1638 on a 2016 Toyota RAV4?
Diagnosing the problem requires using an OBDII scanner to retrieve the specific fault code (B1638) and conducting a thorough inspection of the left rear airbag sensor assembly, wiring, and connections for any visible damage or issues. It's recommended to consult a professional mechanic for a comprehensive diagnosis.
4. Can the OBDII code B1638 on a 2016 Toyota RAV4 be reset without fixing the underlying issue?
Resetting the code without addressing the root cause, such as initializing the left rear airbag sensor assembly, may temporarily turn off the warning light but will not resolve the underlying safety concern. It's crucial to diagnose and repair the issue to ensure proper airbag functionality in the event of an accident.
5. What are the repair options for resolving the OBDII code B1638 on a 2016 Toyota RAV4?
Repair options may include reinitializing the left rear airbag sensor assembly using appropriate diagnostic tools, repairing or replacing damaged wiring or connections, and addressing any sensor malfunctions. Seeking assistance from a qualified technician is advisable for accurate diagnosis and proper repair.
6. Is it safe to drive a 2016 Toyota RAV4 with the OBDII code B1638 triggered?
Driving with the B1638 code present poses a risk as it indicates a potential issue with the left rear airbag sensor assembly, compromising the proper deployment of the airbag in a collision. It's recommended to address the problem promptly to ensure the vehicle's safety systems function correctly.
7. Can I fix the OBDII code B1638 on a 2016 Toyota RAV4 myself?
While some DIY enthusiasts may attempt simple checks like inspecting wiring connections, resolving the B1638 code often requires specialized diagnostic equipment and expertise. Due to the critical nature of airbag systems, it's best to consult a professional mechanic for proper diagnosis and repair.
8. How much does it typically cost to repair the OBDII code B1638 on a 2016 Toyota RAV4?
The cost of repairing the B1638 code can vary based on the extent of the damage, parts needed for replacement, and labor rates at the repair facility. It's advisable to obtain multiple quotes from reputable mechanics to compare prices and ensure a fair repair cost.
9. Are there any recalls or service bulletins related to the OBDII code B1638 on a 2016 Toyota RAV4?
Owners of 2016 Toyota RAV4 models experiencing the B1638 code should check with Toyota dealerships or the manufacturer's website for any recalls or service bulletins related to this specific issue. Keeping up-to-date with manufacturer communications can provide valuable information on potential solutions or assistance.
10. How long does it take to repair the OBDII code B1638 on a 2016 Toyota RAV4?
The repair time for the B1638 code can vary depending on the exact cause of the issue, availability of parts, and the mechanic's workload. Simple repairs like reinitializing the sensor assembly may take less time, while more complex issues could require several hours or even days to diagnose and fix.
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