B1638 2017 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 2017 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 2017 Toyota RAV4 Description
What are the Possible Causes of the DTC B1638 2017 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 2017 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 2017 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 2017 Toyota RAV4 code?
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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 B1638 2017 Toyota RAV4 Code
1. What are the common symptoms of OBDII code B1638 in a 2017 Toyota RAV4?
- Common symptoms include the airbag warning light illuminating on the dashboard and potential issues with the left rear airbag sensor assembly.
2. What does the OBDII code B1638 on a 2017 Toyota RAV4 indicate?
- The code B1638 signifies that the initialization process of the rear airbag sensor assembly on the left side of the vehicle is incomplete.
3. What can cause the Rear Airbag Sensor Assembly Left Initialization Incomplete error in a 2017 Toyota RAV4?
- Possible causes include a fault in the sensor assembly, wiring issues, a disconnected connector, or a communication problem within the airbag system.
4. How can I diagnose the OBDII code B1638 in my 2017 Toyota RAV4?
- Diagnosis typically involves using an OBDII scanner to retrieve the specific trouble code, inspecting the left rear airbag sensor assembly, and checking the wiring and connectors for any visible damage.
5. Is it safe to drive my 2017 Toyota RAV4 with the B1638 error code?
- It is not recommended to drive the vehicle with an active airbag system fault, as it could compromise the effectiveness of the airbags in the event of an accident.
6. Can I reset the B1638 code in my 2017 Toyota RAV4 myself?
- While you can clear the code with an OBDII scanner, it is crucial to address the underlying issue causing the error to ensure the proper functioning of the airbag system.
7. How much does it typically cost to repair the B1638 code on a 2017 Toyota RAV4?
- The repair costs can vary depending on the exact cause of the issue, but expect to pay for diagnostic time, parts replacement, and potential labor fees, which could range from a few hundred to over a thousand dollars.
8. Are there any DIY fixes for the B1638 error in a 2017 Toyota RAV4?
- DIY fixes may include checking and securing the wiring connections, but for more complex issues related to the sensor assembly or airbag system, it is recommended to seek professional help.
9. Will the B1638 code prevent my 2017 Toyota RAV4 from passing a state inspection?
- Yes, in many regions, a vehicle with an active airbag system fault like the B1638 code may fail the safety inspection, as the airbags are a critical component of the vehicle's safety system.
10. How can I prevent the Rear Airbag Sensor Assembly Left Initialization Incomplete issue in my 2017 Toyota RAV4?
- Regular maintenance and inspections of the airbag system, prompt resolution of any warning lights or error codes, and careful handling of the vehicle's wiring can help prevent such issues from occurring.
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