B2005 Code - Short To Positive In Seat Belt Motor Left Circuit
Quick Answer
The Seat Belt Control ECU receives information from the master cylinder solenoid (Skid Control ECU) via the Controlled Are Network (CAN) communication line and tightens the seat belt by operating the motor in the Front Seat Outer Belt Assembly Right (RH) or Left (LH). Common causes include Faulty Front Seat Outer Belt Assembly Left (LH), Front Seat Outer Belt Assembly Left (LH) harness is open or shorted, Front Seat Outer Belt Assembly Left (LH) 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
- B2005 indicates Short To Positive In Seat Belt Motor Left Circuit.
- Common causes
- Common causes include Faulty Front Seat Outer Belt Assembly Left (LH), Front Seat Outer Belt Assembly Left (LH) harness is open or shorted, Front Seat Outer Belt Assembly Left (LH) 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 B2005 Description
What are the Possible Causes of the DTC B2005?
- Faulty Front Seat Outer Belt Assembly Left (LH)
- Front Seat Outer Belt Assembly Left (LH) harness is open or shorted
- Front Seat Outer Belt Assembly Left (LH) circuit poor electrical connection
- Faulty Seat Belt Control ECU
How to Fix the DTC B2005?
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 B2005 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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Get the B2005 code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- B2005 Acura — Left Power Sliding Door Control Unit Lost Communication With MICU
- B2005 Honda — Left Power Sliding Door Control Unit Lost Communication With MICU
- B2005 Lexus — Short To Positive In Seat Belt Motor Left Circuit
- B2005 Scion — Short To Positive In Seat Belt Motor Left Circuit
- B2005 Toyota — Short To Positive In Seat Belt Motor Left Circuit
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 B2005 Code
1. What does OBDII code B2005 mean?
Code B2005 indicates a short to positive in the seat belt motor left circuit, meaning there is an electrical issue causing improper operation of the left seat belt motor.
2. What are the symptoms of code B2005?
Common symptoms include the left seat belt motor not functioning properly, warning lights on the dashboard, or failure of the seat belt system to engage or retract.
3. What causes the B2005 code to appear?
The code can be caused by damaged wiring, a short circuit to power in the seat belt motor circuit, a faulty seat belt motor, or a malfunctioning control module.
4. How can I diagnose a B2005 code?
Start by visually inspecting the wiring and connectors for damage, test the seat belt motor for proper operation, and use a multimeter to check for a short to power in the circuit.
5. Can I still drive my vehicle with a B2005 code?
While the vehicle may still be drivable, the seat belt system may not function correctly, posing a safety risk. It’s important to address the issue promptly.
6. How do I fix the B2005 code?
Repairs may include repairing or replacing damaged wiring, replacing the seat belt motor if it’s faulty, or addressing issues with the control module.
7. What tools are needed to fix a B2005 code?
You may need a multimeter, a scan tool to clear the code, and basic tools to access and repair wiring or replace components.
8. How much does it cost to fix the B2005 code?
The cost depends on the root cause. Wiring repairs may cost less than $100, while replacing a seat belt motor or control module can cost $200–$500 or more, including labor.
9. Can I fix the B2005 code myself?
If you’re comfortable with electrical diagnostics and repairs, you may be able to fix the issue. Otherwise, it’s best to consult a professional mechanic.
10. Will clearing the code with a scan tool fix the problem?
Clearing the code will not fix the underlying issue. The problem must be diagnosed and repaired to prevent the code from returning.
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