B1793 2016 Toyota RAV4 Code - Occupant Classification Sensor Power Supply Circuit Malfunction
Quick Answer
The Occupant Classification Sensor power supply circuit consists of the Occupant Detection ECU and the occupant classification sensors. Common causes include Faulty Separate Type Front Seat Cushion Spring Assembly (Occupant Classification Sensors), Separate Type Front Seat Cushion Spring Assembly harness is open or shorted, Separate Type Front Seat Cushion Spring Assembly 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
- B1793 2016 Toyota RAV4 indicates Occupant Classification Sensor Power Supply Circuit Malfunction.
- Common causes
- Common causes include Faulty Separate Type Front Seat Cushion Spring Assembly (Occupant Classification Sensors), Separate Type Front Seat Cushion Spring Assembly harness is open or shorted, Separate Type Front Seat Cushion Spring Assembly 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 B1793 2016 Toyota RAV4 Description
What are the Possible Causes of the DTC B1793 2016 Toyota RAV4?
- Faulty Separate Type Front Seat Cushion Spring Assembly (Occupant Classification Sensors)
- Separate Type Front Seat Cushion Spring Assembly harness is open or shorted
- Separate Type Front Seat Cushion Spring Assembly circuit poor electrical connection
- Faulty Occupant Detection ECU
How to Fix the DTC B1793 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 B1793 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 B1793 2016 Toyota RAV4 code?
Need more information on how to fix the B1793 2016 Toyota RAV4 code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the B1793 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 B1793 2016 Toyota RAV4 Code
1. What does OBDII code B1793 mean on a 2016 Toyota RAV4?
B1793 indicates a malfunction in the Occupant Classification Sensor (OCS) power supply circuit, which is responsible for detecting the presence and weight of a passenger to control airbag deployment.
2. What are the common symptoms of code B1793 in a 2016 Toyota RAV4?
Symptoms may include the airbag warning light staying on, improper airbag deployment functionality, or the passenger seat airbag being disabled.
3. What causes code B1793 in a Toyota RAV4?
Common causes include damaged wiring or connectors in the OCS power supply circuit, a faulty Occupant Classification Sensor, or issues with the control module.
4. Can I still drive my 2016 Toyota RAV4 with a B1793 code?
While you can drive the vehicle, it’s not recommended as the airbag system may not function properly, posing a safety risk in the event of an accident.
5. How do I fix the B1793 code in my 2016 Toyota RAV4?
Repairs may include inspecting and repairing damaged wiring or connectors, replacing the Occupant Classification Sensor, or reprogramming the airbag system control module.
6. How is the B1793 code diagnosed?
A technician will use a scan tool to read the code, inspect the OCS power supply circuit, check for damaged wiring or loose connections, and test the sensor and control module.
7. Does the B1793 code require replacing the Occupant Classification Sensor?
Not always. The issue may be caused by a wiring problem, so the sensor should only be replaced if it’s confirmed to be faulty after diagnosis.
8. How much does it cost to fix the B1793 code on a 2016 Toyota RAV4?
The repair cost can vary but typically ranges from $100 to $500, depending on whether it involves simple wiring repairs or replacing the sensor or control module.
9. Can a faulty battery cause the B1793 code in a Toyota RAV4?
It’s unlikely, but a weak or failing battery can cause electrical issues that might affect the OCS system. Checking the battery voltage is a good step during diagnosis.
10. Will clearing the B1793 code fix the issue?
Clearing the code without addressing the underlying problem will not fix the issue. The code will likely return until proper repairs are made.
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