The OBD code B0071 indicates a problem with the Passenger Seat Belt Tension Sensor in the airbag system.
Symptoms include the Air Bag Warning Light being ON.
Causes may include a faulty sensor, wiring issues, or a defective Passenger Presence Module.
This is a serious issue as it affects passenger safety.
To fix it, inspect and repair any damaged components or wiring connections related to the passenger seat belt system.
| 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 b0071 OBD Code
The vehicle displays an airbag warning light on the dashboard with fault code B0071 stored.
- Symptoms: Air Bag Warning Light ON
Causes of the b0071 OBD Code
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Possible triggers for fault code B0071 include issues with the passenger seat belt tension sensor.
- B0071 can be caused by a faulty Passenger Seat Belt Retractor (Passenger Seat Belt Tension Sensor).
- A Passenger Seat Belt Retractor harness that is open or shorted.
- A Passenger Seat Belt Retractor circuit with a poor electrical connection.
- Or a faulty Passenger Presence Module.
Fixing Error Code b0071 Step By Step
To resolve fault code B0071, inspect and repair the driver frontal deployment loop resistance.
- To fix OBDII code B0071, first, review the ‘Possible Causes’ mentioned above and visually examine the corresponding wiring harness and connectors.
- Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.
- Next, check the seat belt pretensioner system for any faults or malfunctions.
- Inspect the seat belt pretensioner module for any issues and replace it if necessary.
- Clear the fault codes from the vehicle’s computer using a scan tool.
- Finally, perform a test drive to verify that the issue has been resolved.
Cost Of Fixing b0071 Fault Code
The repair for fault code B0071 typically involves replacing the driver frontal deployment loop stage 1.
The cost to diagnose and fix OBD code B0071 typically ranges from $75 to $150, with an estimated repair time of 1. 0 hour.
Costs may vary based on labor rates, shop location, and the complexity of the repair needed.
Details of the b0071 OBD Code
B0071 code indicates a problem with the passenger seatbelt tension sensor circuit.
OBD code B0071 indicates a problem with the ambient light sensor circuit.
This code is triggered by the Body Control Module (BCM) when it detects a malfunction in the ambient light sensor circuit.
The ambient light sensor is responsible for detecting the amount of light outside the vehicle and adjusting interior lighting or other systems accordingly.
When this sensor circuit fails or malfunctions, it can trigger the B0071 trouble code.
Mechanic’s Tech Notes
This section provides detailed information on diagnosing and repairing code B0071.
OBDII code B0071 typically indicates a malfunction in the ambient light sensor circuit.
To diagnose, use a voltmeter to test the sensor’s voltage output.
Check for proper voltage levels according to manufacturer specifications.
Inspect the wiring harness and connectors for any damage, corrosion, or loose connections.
Ensure the sensor is receiving power and ground.
Use a scan tool to monitor sensor data and confirm proper operation.
If necessary, replace the ambient light sensor.
Remember to clear the code after repairs are completed.
FAQ
OBD code B0071 indicates a fault with the Passenger Seat Belt Retractor system. Check for issues with the seat belt tension sensor, wiring, or connectors.
Common symptoms of OBD code B0071 include Air Bag Warning Light ON. Causes may be a faulty Passenger Seat Belt Retractor or related wiring issues. Fix: Inspect and repair as needed.
Diagnose OBD code B0071 by checking the passenger seat belt retractor, harness, and connectors for faults. Repair any damaged components or poor connections found.
Wrap Up
If your airbag warning light is on and you see OBDII code b0071, it may indicate a fault in the passenger seatbelt tension sensor circuit.
This could be caused by a faulty sensor, damaged wiring, or poor connections in the system.
To address OBDII code b0071, check the wiring harness and connectors for any signs of damage or corrosion.
Test the passenger seatbelt tension sensor for proper operation and replace if necessary.
Ensure all connections are secure and free of debris to resolve the issue effectively.
