The OBD code B1794 for Toyota indicates an issue with the Occupant Detection ECU.
Symptoms include the Air Bag Warning Light being ON.
This is usually caused by a faulty Occupant Detection ECU, open/shorted harness, or poor electrical connection.
While not a critical issue, it affects safety systems.
To fix, inspect and repair any damaged components or wiring connections related to the Occupant Detection ECU.
| Repair Importance Level | 10.0 (Out of 10) |
| Estimated Repair Time | Approximately 1.0 hour |
| Repair Difficulty Level | 10.0 (Out of 10) |
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Symptoms of the Toyota b1794 OBD Code
The specific fault code B1794 in a Toyota indicates an issue with the key identification.
- Symptoms: Air Bag Warning Light ON
Causes of the Toyota b1794 OBD Code
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Possible triggers for Toyota fault code B1794 include issues with the occupant classification system.
- B1794 can be caused by a faulty Occupant Detection ECU.
- An open or shorted Occupant Detection ECU harness.
- A poor electrical connection in the Occupant Detection ECU circuit.
Fixing Toyota Error Code b1794 Step By Step
Address the issue by inspecting the driver side airbag module circuit for Toyota fault code B1794.
- To fix Toyota OBDII code B1794, start by reviewing the possible causes mentioned above.
- Visually examine the wiring harness and connectors related to the airbag system.
- Check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.
- If no visible issues are found, perform a diagnostic scan tool test to pinpoint the exact cause of the B1794 code.
- Based on the scan results, replace any faulty components such as the airbag sensor, clock spring, or airbag control module.
- Clear the fault codes from the vehicle’s computer memory after completing the repair to reset the system.
Cost Of Fixing Toyota b1794 Fault Code
Diagnosing and repairing fault code B1794 in a Toyota may involve replacing the occupant classification ECU.
The cost to diagnose and fix Toyota OBD code B1794 depends on the estimated 1. 0hour repair time.
Labor rates range from $75 to $150 per hour, so the total cost could be between $75 and $150. Factors like shop rates and complexity can affect the final cost.
Details of the Toyota b1794 OBD Code
The Toyota B1794 code indicates a malfunction in the occupant classification system.
OBD code B1794 for Toyota vehicles indicates a malfunction in the Occupant Classification System ECU.
This code is triggered by the Occupant Classification System ECU when it detects an internal malfunction within the system.
The Occupant Classification System is responsible for determining whether the front passenger seat is occupied and the weight of the occupant to control airbag deployment.
When the system detects a fault, it will trigger the B1794 code to alert the driver or technician of the issue.
Mechanic’s Tech Notes
Detailed information on Toyota fault code B1794, including symptoms, causes, and repair procedures.
OBDII code B1794 in a Toyota typically indicates an issue with the transmission control module (TCM).
To diagnose, check TCM power and ground using a multimeter.
Use a scan tool to confirm TCM communication over the CAN network.
If no communication is detected, reprogramming or reflashing the TCM may be necessary.
Visually inspect wiring harnesses and connectors for damage, and check connector pins for any signs of corrosion, bending, or breakage.
This thorough inspection can help pinpoint the root cause of the B1794 fault code.
FAQ
OBD code B1794 in a Toyota means an issue with the Occupant Detection ECU. Check for wiring harness faults and connector issues causing the Air Bag Warning Light to illuminate.
Common symptoms for Toyota code B1794 include Air Bag Warning Light ON. Causes may be a faulty Occupant Detection ECU or related wiring issues. Inspect and repair as needed.
Diagnose and repair OBD code B1794 in a Toyota: Symptoms Air Bag Warning Light ON; Causes Faulty Occupant Detection ECU, harness issues; Fix Inspect and repair wiring/connectors.
Wrap Up
If your Toyota is showing OBDII code b1794, you may experience issues with the airbag system, such as the airbag warning light staying on.
This code typically indicates a problem with the front collision sensor circuit, which could be caused by a faulty sensor, damaged wiring, or poor connections.
To address Toyota OBDII code b1794, start by inspecting the front collision sensor and its wiring harness for any visible damage.
Check the sensor’s connectors for corrosion or loose connections.
If no issues are found, consider testing the sensor’s functionality or consulting a professional for further diagnosis
