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Engine-Codes – Generic – B0079:08

B0079:08 Code - Driver Seat Position Sensor Circuit Performance Signal Invalid

Quick Answer

The B0079:08 diagnostic trouble code (DTC) refers to the driver seat position sensor circuit performance signal being invalid. Common causes include Faulty driver seat position sensor, Damaged wiring or connectors associated with the sensor, Corrosion in the sensor connections. 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
B0079:08 indicates Driver Seat Position Sensor Circuit Performance Signal Invalid.
Common causes
Common causes include Faulty driver seat position sensor, Damaged wiring or connectors associated with the sensor, Corrosion in the sensor connections.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code B0079:08 Description

The B0079:08 diagnostic trouble code (DTC) refers to the driver seat position sensor circuit performance signal being invalid. This means that the sensor responsible for detecting the driver's seat position is not functioning correctly or is providing inaccurate data to the vehicle's electronic control unit (ECU). The driver seat position sensor is essential for various vehicle systems, including airbag deployment, seatbelt tensioning, and driver assistance features that rely on seat position information.

OBDII Code B0079:08 - Driver Seat Position Sensor Circuit Performance Signal Invalid
B0079:08 Code - Driver Seat Position Sensor Circuit Performance Signal Invalid

Common Causes of B0079:08

  1. Faulty driver seat position sensor.
  2. Damaged wiring or connectors associated with the sensor.
  3. Corrosion in the sensor connections.
  4. Sensor calibration or initialization issues.
  5. Electronic control unit (ECU) malfunction.

Symptoms of B0079:08

  1. Airbag warning light illuminated on the dashboard.
  2. Inability to adjust seat position electronically.
  3. Erratic movement of the driver's seat.
  4. Disabling of driver assistance features.
  5. Unusual or erratic behavior of airbag deployment during a collision.

How to Fix B0079:08

  1. Start by conducting a thorough inspection of the driver seat position sensor, wiring, and connectors for any visible damage or corrosion.
  2. Test the sensor's functionality using a multimeter or diagnostic tool to determine if it is providing accurate data to the ECU.
  3. If the sensor is faulty, replace it with a new one following the manufacturer's guidelines.
  4. Check and repair any damaged wiring or connectors associated with the sensor.
  5. Re-calibrate or initialize the new sensor to ensure proper communication with the ECU.

Cost to Fix B0079:08

The typical repair costs for addressing a B0079:08 code can vary depending on the specific vehicle make and model, the location of the repair shop, and the labor rates. On average, the parts for a driver seat position sensor replacement can range from $100 to $300, while the labor costs can be between $100 and $200. Overall, the total repair cost for this issue may range from $200 to $500. It is advisable to contact local auto repair shops for accurate estimates based on individual circumstances.

What does this mean?

Tech Notes for B0079:08

B0079:01 Driver Seat Position Sensor Circuit Short to Battery

B0079:02 Driver Seat Position Sensor Circuit Short to Ground

B0079:04 Driver Seat Position Sensor Circuit Open

B0079:05 Driver Seat Position Sensor Circuit High Voltage or Open

B0079:06 Driver Seat Position Sensor Circuit Low Voltage or Open

B0079:08 Driver Seat Position Sensor Circuit Performance-Signal Invalid

B0079:0C Driver Seat Position Sensor Circuit Low Current

Need more information about the B0079:08 code?

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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.

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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