B0073 Code - Second Row Left Seatbelt Pretensioner Deployment Control
Quick Answer
The Air Bag Control Module monitors the Second Row Left Seatbelt Pretensioner. Common causes include Faulty Second Row Left Seatbelt Pretensioner, Second Row Left Seatbelt Pretensioner harness is open or shorted, Second Row Left Seatbelt Pretensioner circuit poor electrical connection. 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 Second Row Left Seatbelt Pretensioner, Second Row Left Seatbelt Pretensioner harness is open or shorted, Second Row Left Seatbelt Pretensioner circuit poor electrical connection.
- 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.
Code B0073 Description
What are the Possible Causes of the DTC B0073?
- Faulty Second Row Left Seatbelt Pretensioner
- Second Row Left Seatbelt Pretensioner harness is open or shorted
- Second Row Left Seatbelt Pretensioner circuit poor electrical connection
How to Fix the DTC B0073?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B0073 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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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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