B0071:07 Code - Passenger Seat Belt Tension Sensor Circuit Voltage Above Threshold
Quick Answer
The B0071:07 diagnostic trouble code (DTC) indicates that the passenger seat belt tension sensor circuit's voltage is above the threshold set by the vehicle's onboard computer system. Common causes include Faulty passenger seat belt tension sensor, Wiring issues in the sensor circuit, Corrosion or damage to sensor connectors. 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
- B0071:07 indicates Passenger Seat Belt Tension Sensor Circuit Voltage Above Threshold.
- Common causes
- Common causes include Faulty passenger seat belt tension sensor, Wiring issues in the sensor circuit, Corrosion or damage to sensor connectors.
- 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.
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Code B0071:07 Description
The B0071:07 diagnostic trouble code (DTC) indicates that the passenger seat belt tension sensor circuit's voltage is above the threshold set by the vehicle's onboard computer system. This sensor is responsible for detecting the tension in the passenger seat belt and sending this information to the vehicle's airbag system. When the voltage exceeds the specified threshold, it can lead to issues with the airbag system's deployment logic, potentially compromising the safety of the vehicle's occupants in the event of a collision.
Common Causes of B0071:07
- Faulty passenger seat belt tension sensor.
- Wiring issues in the sensor circuit.
- Corrosion or damage to sensor connectors.
- Malfunctioning airbag control module.
- Issues with the vehicle's electrical system.
Symptoms of B0071:07
- Airbag warning light illuminated on the dashboard.
- Inconsistent or erratic behavior of the airbag system.
- Failure of the airbags to deploy in a crash.
- Passenger seat belt warning light may also be illuminated.
- Diagnostic trouble code B0071:07 stored in the vehicle's computer system.
How to Fix B0071:07
- Begin by conducting a thorough inspection of the passenger seat belt tension sensor circuit, checking for any visible damage or loose connections.
- Use a multimeter to test the voltage output of the sensor and compare it to the manufacturer's specifications.
- If the sensor is faulty, replace it with a new, OEM part to ensure proper functionality.
- Check and repair any damaged wiring or connectors in the sensor circuit.
- Clear the diagnostic trouble code from the vehicle's computer system and perform a test drive to verify that the issue has been resolved.
Cost to Fix B0071:07
The cost of repairing a passenger seat belt tension sensor circuit voltage above threshold issue can vary depending on the specific cause of the problem and the labor rates in your area. In general, the cost of parts for this repair can range from $100 to $300, while labor costs can add an additional $100 to $200. Overall, you can expect to pay anywhere from $200 to $500 for this repair at most auto repair shops. However, it's recommended to obtain a detailed quote from a local mechanic to get a more accurate estimate based on your vehicle's make and model. Keep in mind that rates may be higher at dealerships or in metropolitan areas, while independent shops may offer more competitive prices.
Tech Notes for B0071:07
B0071:04 Passenger Seat Belt Tension Sensor Circuit Open
B0071:07 Passenger Seat Belt Tension Sensor Circuit Voltage Above Threshold
B0071:08 Passenger Seat Belt Tension Sensor Circuit Voltage Performance Signal Invalid
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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.
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