The OBD code B1655 for Toyota indicates an issue with the Front Seat Inner Belt Left (LH) system.
Symptoms include the Air Bag Warning Light being illuminated.
This is commonly caused by a faulty Front Seat Inner Belt Left (LH), wiring harness issues, or a faulty Center Airbag Sensor.
It is a serious issue that should be addressed promptly.
To fix it, inspect the wiring harness and connectors for any damage or poor connections.
Repair Importance Level | 10.0 (Out of 10) |
Estimated Repair Time | Approximately 1.0 hour |
Repair Difficulty Level | 10.0 (Out of 10) |
Symptoms of the Toyota b1655 OBD Code
The vehicle displays an airbag warning light on the dashboard with fault code Toyota B1655.
- Symptoms: Air Bag Warning Light ON
Causes of the Toyota b1655 OBD Code
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Possible triggers for Toyota B1655 include issues with the occupant classification system.
- B1655 can be caused by a faulty Front Seat Inner Belt Left (LH) sensor.
- A broken Front Seat Inner Belt Left (LH) harness.
- An open or shorted Front Seat Inner Belt Left (LH) harness.
- A poor electrical connection in the Front Seat Inner Belt Left (LH) circuit.
- Or a faulty Center Airbag Sensor.
Fixing Toyota Error Code b1655 Step By Step
Resolve fault code Toyota B1655 by inspecting and repairing the driver’s side airbag sensor circuit.
- To fix Toyota OBDII code B1655, start by reviewing the possible causes mentioned above.
- Visually examine the wiring harness and connectors related to the airbag sensor assembly circuit.
- 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 thorough diagnostic of the airbag sensor assembly and related components.
- Replace the airbag sensor assembly if necessary.
- Clear the fault codes and perform a test drive to ensure the issue is resolved.
Cost Of Fixing Toyota b1655 Fault Code
Diagnosing and repairing fault code B1655 in a Toyota may involve replacing the occupant classification ECU.
The cost to diagnose and fix Toyota OBD code B1655 typically ranges from $75 to $150, with an estimated repair time of 1. 0 hour.
The final cost depends on labor rates, shop fees, and the complexity of the repair.
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Details of the Toyota b1655 OBD Code
The Toyota B1655 code indicates a malfunction in the driver’s side airbag sensor circuit.
OBD code B1655 for Toyota means Smart Key ECU Communication Stop.
This code is triggered when the communication between the smart key ECU and other ECUs in the vehicle is lost.
The smart key ECU is responsible for managing the functions related to the smart key system, such as keyless entry and pushbutton start.
When this communication is interrupted, it can lead to issues with starting the vehicle or using keyless entry features.
Mechanic’s Tech Notes
For Toyota fault code B1655, check for a malfunction in the driver’s side airbag sensor circuit.
OBDII code B1655 in a Toyota typically indicates a problem with the transmission control module (TCM).
To diagnose this, you can use a multimeter to check the TCM’s power and ground connections.
Additionally, a scan tool can help verify if the TCM is communicating properly over the Controller Area Network (CAN) network.
If the TCM is not responding, reprogramming or reflashing it may be necessary.
Visually inspect the wiring harness and connectors for any damage, and ensure connector pins are not broken, bent, pushed out, or corroded.
This thorough inspection can help pinpoint the issue and guide you towards an effective repair.
FAQ
OBD code B1655 in a Toyota indicates an issue with the Front Seat Inner Belt Left (LH) circuit. Check wiring, connectors, and components for faults.
Code B1655 in a Toyota may cause the Air Bag Warning Light to illuminate. Common symptoms include issues with the Front Seat Inner Belt Left (LH) circuit.
Diagnose and repair OBD code B1655 in your Toyota by checking the Front Seat Inner Belt Left (LH) circuit for faults and inspecting related wiring and connectors.

Wrap Up
If your Toyota is displaying OBD code B1655, you may experience issues with the driver’s seat position sensor.
This code typically indicates a fault with the sensor itself, wiring problems, or a poor connection.
Symptoms may include an illuminated airbag warning light, disabled airbag system, or inaccurate seat position readings.
To address Toyota OBD code B1655, start by inspecting the wiring harness and connectors related to the driver’s seat position sensor.
Look for any damaged wires, loose connections, or corrosion.
If no visible issues are found, consider testing the sensor itself for proper operation or