B0079:04 Code - Driver Seat Position Sensor Circuit Open
Quick Answer
The B0079:04 diagnostic trouble code (DTC) indicates that there is an open circuit in the driver seat position sensor. Common causes include Damaged wiring or connectors in the seat position sensor circuit, Faulty driver seat position sensor, Corrosion or moisture 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
- B0079:04 indicates Driver Seat Position Sensor Circuit Open.
- Common causes
- Common causes include Damaged wiring or connectors in the seat position sensor circuit, Faulty driver seat position sensor, Corrosion or moisture 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.
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Code B0079:04 Description
The B0079:04 diagnostic trouble code (DTC) indicates that there is an open circuit in the driver seat position sensor. The seat position sensor is a crucial component of the vehicle's occupant detection system, which is responsible for determining the position of the driver's seat. This information is used by various safety systems such as airbags and seat belt pretensioners to optimize their performance in the event of a collision.
Common Causes of B0079:04
- Damaged wiring or connectors in the seat position sensor circuit.
- Faulty driver seat position sensor.
- Corrosion or moisture in the sensor connections.
- Electrical issues in the vehicle's wiring harness.
- Impact or physical damage to the seat affecting sensor readings.
Symptoms of B0079:04
- Airbag warning light illuminated on the dashboard.
- Inconsistent deployment of airbags in a crash.
- Seat belt pretensioners not activating properly.
- Unusual movement or positioning of the driver's seat.
How to Fix B0079:04
- Begin by conducting a thorough visual inspection of the seat position sensor wiring and connectors to check for any visible damage or corrosion.
- Use a multimeter to test the continuity of the circuit and identify any open circuits or faulty connections.
- If necessary, replace the driver seat position sensor with a new, OEM-quality part.
- Clear the DTC from the vehicle's ECU using a diagnostic scanner to reset the system and ensure the repair was successful.
- Test the system by moving the driver's seat and checking for proper operation of the seat position sensor and related safety systems.
Cost to Fix B0079:04
The typical repair costs for addressing a B0079:04 code can vary depending on the specific cause of the issue and the cost of parts and labor. In general, replacing a driver seat position sensor can range from $150 to $300, while the cost of labor for diagnosis and repair can add another $100 to $200. It's important to note that these are rough estimates, and actual costs may vary based on factors such as location, vehicle make and model, and the rates of the auto repair shop. It's advisable to contact local shops for a more accurate cost estimate.
Tech Notes for B0079:04
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
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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.
Frequently Asked Questions about B0079:04 Code
1. What are common symptoms of an OBDII code B0079:04 related to the driver seat position sensor circuit open?
The common symptoms include the airbag warning light illuminating on the dashboard and potential issues with the airbag system.
2. What can cause the driver seat position sensor circuit to be open and trigger code B0079:04?
Potential causes include damaged wiring, loose connections, a faulty seat position sensor, or issues with the airbag control module.
3. How can I diagnose the driver seat position sensor circuit open issue associated with OBDII code B0079:04?
Diagnosis typically involves checking the wiring and connections related to the seat position sensor, testing the sensor itself, and inspecting the airbag control module for faults.
4. Is it safe to drive with an OBDII code B0079:04 due to a driver seat position sensor circuit open?
It is not recommended to drive the vehicle with this issue, as it may affect the proper functioning of the airbag system in case of an accident.
5. Can I reset the OBDII code B0079:04 related to the driver seat position sensor circuit open?
Resetting the code may temporarily turn off the warning light, but it will reappear if the underlying issue causing the circuit open is not addressed.
6. How can I repair the driver seat position sensor circuit open problem indicated by OBDII code B0079:04?
Repair options include fixing any damaged wiring, securing loose connections, replacing a faulty seat position sensor, or addressing issues with the airbag control module.
7. Are there any DIY tips for troubleshooting OBDII code B0079:04 linked to the driver seat position sensor circuit open?
DIY tips may include visually inspecting wiring and connectors, checking for loose connections, and consulting the vehicle's service manual for specific troubleshooting steps.
8. What is the typical cost to repair an OBDII code B0079:04 caused by a driver seat position sensor circuit open?
The repair cost can vary depending on the specific cause of the issue, but it may involve expenses for parts replacement and labor.
9. Can a mechanic help with diagnosing and fixing the OBDII code B0079:04 related to a driver seat position sensor circuit open?
Yes, a qualified mechanic or technician can assist in diagnosing the problem, repairing the circuit open issue, and ensuring the proper functioning of the airbag system.
10. How important is it to address OBDII code B0079:04 indicating a driver seat position sensor circuit open?
It is crucial to address this issue promptly to ensure the airbag system functions correctly in case of an accident and to maintain the safety of the vehicle occupants.
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