B0073 Code - Second Row Left Seatbelt Pretensioner Deployment Control
Quick Answer
The B0073 code indicates a problem with the second-row left seatbelt pretensioner deployment control in a vehicle. Common causes include Faulty seatbelt pretensioner deployment control module, Wiring issues or a poor electrical connection, Impact or damage to the seatbelt pretensioner system. 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
- B0073 indicates Second Row Left Seatbelt Pretensioner Deployment Control.
- Common causes
- Common causes include Faulty seatbelt pretensioner deployment control module, Wiring issues or a poor electrical connection, Impact or damage to the seatbelt pretensioner system.
- 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 B0073 Description
The B0073 code indicates a problem with the second-row left seatbelt pretensioner deployment control in a vehicle. The seatbelt pretensioner is a safety feature that tightens the seatbelt in the event of a collision, reducing the forward movement of the occupant and minimizing the risk of injury. The deployment control system is responsible for triggering the pretensioner when necessary.
Common Causes of B0073
- Faulty seatbelt pretensioner deployment control module.
- Wiring issues or a poor electrical connection.
- Impact or damage to the seatbelt pretensioner system.
- Corrosion or moisture in the system affecting functionality.
- Software glitches or malfunctions in the control unit.
Symptoms of B0073
- Airbag warning light illuminated on the dashboard.
- Seatbelt warning light flashing or staying on.
- Inability to retract or extend the seatbelt properly.
- Audible warning chime when driving.
How to Fix B0073
- Diagnose the issue using a scan tool to retrieve the specific fault code.
- Inspect the seatbelt pretensioner deployment control module and wiring for any visible damage or corrosion.
- Test the electrical connections to ensure proper voltage and continuity.
- Replace the faulty seatbelt pretensioner deployment control module if necessary.
- Clear the fault code and perform a test to verify that the system is functioning correctly.
Cost to Fix B0073
The typical repair costs for addressing a B0073 code can vary depending on the extent of the issue and the specific components that need to be replaced. On average, the repair for a seatbelt pretensioner deployment control problem can range from $200 to $500, including parts and labor. However, it is important to note that diagnostic time and labor rates at auto repair shops can vary, so it is advisable to obtain a specific estimate from a qualified technician based on your vehicle make and model. It is also recommended to address this issue promptly to ensure the safety features of the vehicle are functioning correctly.
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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 B0073 Code
1. What does the OBDII code B0073 mean?
B0073 indicates an issue with the second row left seatbelt pretensioner deployment control circuit, often related to a fault in the wiring, connector, or pretensioner itself.
2. What are common symptoms of a B0073 code?
Symptoms may include an illuminated airbag or SRS warning light, the seatbelt pretensioner not functioning properly, and potential fault codes stored in the vehicle's computer.
3. What causes the B0073 code to appear?
Common causes include damaged wiring, corroded or loose connectors, a faulty seatbelt pretensioner, or an issue with the SRS control module.
4. Is it safe to drive with a B0073 code?
Driving with a B0073 code is not recommended, as it may indicate the seatbelt pretensioner system could fail to deploy in an accident, reducing occupant safety.
5. How can I diagnose a B0073 code?
Start by inspecting the seatbelt pretensioner wiring and connectors for damage or corrosion. Use a scan tool to check the SRS codes and perform continuity tests on the circuit.
6. Can a B0073 code be cleared without repairs?
Clearing the code without addressing the root cause may temporarily turn off the warning light, but the issue will likely return until repairs are completed.
7. How much does it cost to repair a B0073 code?
Repair costs vary depending on the issue but may range from $100 for wiring repairs to over $500 if the seatbelt pretensioner needs replacement.
8. Can I fix the B0073 code myself?
If you have experience with automotive electrical systems, you may be able to repair damaged wiring or connectors. For pretensioner or module issues, professional service is recommended.
9. Does a B0073 code mean the airbag system is affected?
Yes, the B0073 code relates to the SRS system, and a fault in the circuit may impact the proper functioning of the airbag system during a crash.
10. What tools are needed to troubleshoot a B0073 code?
You’ll need a scan tool capable of reading SRS codes, a multimeter for continuity tests, and basic tools to inspect and repair wiring or connectors.
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