OBD code B0102 indicates an issue with the DriverSide Electronic Frontal Sensor (EFS) in the Air Bag system.
Symptoms include the Air Bag Warning Light being ON.
The problem is typically caused by a faulty EFS, open/shorted EFS harness, poor electrical connection, or a faulty Sensing and Diagnostic Module (SDM).
This is a serious issue that requires immediate attention.
To fix it, inspect the wiring harness, connectors, and components for any damage or corrosion.
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 b0102 OBD Code
The vehicle may exhibit issues with the passengerside airbag system when fault code B0102 is present.
- Symptoms: Air Bag Warning Light ON
Causes of the b0102 OBD Code
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Code B0102 typically indicates an issue with the passengerside airbag sensor circuit.
- B0102 can be caused by a faulty DriverSide Electronic Frontal Sensor (EFS).
- A DriverSide Electronic Frontal Sensor (EFS) harness that is open or shorted.
- A DriverSide Electronic Frontal Sensor (EFS) circuit with a poor electrical connection.
- A faulty Sensing and Diagnostic Module (SDM).
Fixing Error Code b0102 Step By Step
Replace faulty passengerside airbag sensor to resolve B0102 fault code.
- To fix OBDII code B0102, start by reviewing the possible causes mentioned above.
- Visually examine the wiring harness and connectors related to the airbag sensor circuit.
- Check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.
- Repair or replace any damaged wiring or connectors as necessary.
- Clear the fault code using a scan tool and test drive the vehicle to verify that the issue has been resolved.
Cost Of Fixing b0102 Fault Code
Diagnosing and repairing fault code B0102 may involve inspecting and replacing the passengerside airbag sensor.
The cost to diagnose and fix OBD code B0102 depends on the estimated 1. 0hour repair time.
Labor rates usually 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 b0102 OBD Code
B0102 code indicates a malfunction in the passengerside airbag sensor circuit.
OBD code B0102 means Fuel Sender Circuit Low Voltage.
This code is triggered by the Body Control Module (BCM) when it detects a low voltage condition in the fuel sender circuit.
The fuel sender circuit is responsible for sending the fuel level information to the BCM, which then displays it on the instrument cluster for the driver to see.
When this circuit has low voltage, it can lead to inaccurate fuel level readings on the dashboard.
Mechanic’s Tech Notes
Code B0102 indicates an issue with the passengerside airbag sensor circuit’s voltage being too low.
OBDII code B0102 indicates an issue with the TCM power circuit.
To diagnose, use a voltmeter to check power and ground connections to the TCM.
Verify TCM communication over the CAN network using a scan tool.
Visually inspect wiring harnesses and connectors for damage, focusing on pin condition for signs of corrosion or damage.
Reflashing the TCM may be necessary.
Ensure all connections are secure and free of corrosion.
If the issue persists, consider consulting a professional for further diagnostics.
FAQ
OBD code B0102 indicates a fault with the DriverSide Electronic Frontal Sensor (EFS). Check sensor, harness, and connections for issues causing Air Bag Warning Light to illuminate.
Common symptoms of OBD code B0102 include Air Bag Warning Light ON. Causes may be a faulty DriverSide Electronic Frontal Sensor (EFS) or related wiring issues.
Diagnose OBD code B0102 by checking for a faulty DriverSide Electronic Frontal Sensor (EFS), harness issues, or a faulty Sensing and Diagnostic Module (SDM).

Wrap Up
If your airbag warning light is on and you see OBDII code B0102, it may indicate a malfunction in the front impact sensor 1 circuit.
This could be caused by a faulty front impact sensor, damaged wiring, or poor connections in the sensor circuit.
To address OBDII code B0102, check the wiring harness and connectors for any signs of damage or corrosion.
Test the front impact sensor for proper operation and replace it if necessary.
Ensure all connections are secure to resolve the issue effectively.