AutoCodes – Generic – B2001

B2001 Code - Short To Ground In Seat Belt Motor Right 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 Right (RH), Front Seat Outer Belt Assembly Right (RH) harness is open or shorted, Front Seat Outer Belt Assembly Right (RH) 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: B2001 indicates Short To Ground In Seat Belt Motor Right Circuit.
Common causes: Common causes include Faulty Front Seat Outer Belt Assembly Right (RH), Front Seat Outer Belt Assembly Right (RH) harness is open or shorted, Front Seat Outer Belt Assembly Right (RH) 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.

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Code Popularity 1,666

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Sep 06, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2001 Description

OBDII Code B2001 - Short To Ground In Seat Belt Motor Right Circuit - AutoCodes.com — B2001 Code - Short To Ground In Seat Belt Motor Right Circuit

What does this mean?

What are the Possible Causes of the DTC B2001?

Faulty Front Seat Outer Belt Assembly Right (RH)
Front Seat Outer Belt Assembly Right (RH) harness is open or shorted
Front Seat Outer Belt Assembly Right (RH) circuit poor electrical connection
Faulty Seat Belt Control ECU

How to Fix the DTC B2001?

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 B2001 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.

Need more information about the B2001 code?

Need more information on how to fix the B2001 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2001 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B2001 Lexus — Short To Ground In Seat Belt Motor Right Circuit
B2001 Scion — Short To Ground In Seat Belt Motor Right Circuit
B2001 Toyota — Short To Ground In Seat Belt Motor Right 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.

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.

Frequently Asked Questions about B2001 Code

1. What are the common symptoms of OBDII code B2001 (Short To Ground In Seat Belt Motor Right Circuit)?

- Common symptoms include the seat belt not retracting properly, seat belt warning light on the dashboard, and potential issues with the seat belt motor operation.

2. What are the possible causes of OBDII code B2001?

- Possible causes include damaged wiring or connectors in the seat belt motor circuit, a faulty seat belt motor, or a short to ground in the circuit.

3. How can I diagnose the root cause of OBDII code B2001?

- You can diagnose the issue by inspecting the wiring and connectors in the seat belt motor circuit, testing the seat belt motor for proper operation, and using a multimeter to check for a short to ground.

4. What are the repair options for OBDII code B2001?

- Repair options may include repairing or replacing damaged wiring or connectors, replacing the seat belt motor if faulty, and addressing any short to ground in the circuit.

5. Can OBDII code B2001 affect the overall safety of the vehicle?

- Yes, OBDII code B2001 can affect the safety of the vehicle as it may lead to improper seat belt operation, potentially compromising occupant safety in the event of a collision.

6. Is it safe to continue driving with OBDII code B2001 present?

- It is not recommended to continue driving with OBDII code B2001 present, as it indicates a potential issue with the seat belt system that could impact safety in the event of an accident.

7. How can I reset OBDII code B2001 after making repairs?

- You can reset the code using an OBDII scanner or by disconnecting the vehicle's battery for a few minutes to clear the stored fault code after making the necessary repairs.

8. Are there any preventive maintenance tips to avoid OBDII code B2001 in the future?

- Regularly inspecting the seat belt system for any signs of wear or damage, addressing any issues promptly, and following the manufacturer's recommended maintenance schedule can help prevent OBDII code B2001.

9. Can OBDII code B2001 be triggered by other issues unrelated to the seat belt system?

- OBDII code B2001 is specific to a short to ground in the seat belt motor right circuit, so it is unlikely to be triggered by issues unrelated to the seat belt system.

10. Should I attempt to repair OBDII code B2001 myself, or seek professional help?

- Depending on your experience and knowledge of automotive electrical systems, you may attempt to diagnose and repair OBDII code B2001 yourself. However, if you are unsure or uncomfortable with the repair process, it is recommended to seek professional help from a qualified mechanic.