AutoCodesGeneric – B0002

B0002 Code - Driver Frontal Stage 2 Deployment Control: Signal Cross Coupled

Quick Answer

The Restraints Control Module (RCM) monitors all deployable device and sensor circuits for a signal cross coupled (short) between circuits. Common causes include Faulty Driver Sir Air Bag, Driver Sir Air Bag harness is open or shorted, Driver Sir Air Bag 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
B0002 indicates Driver Frontal Stage 2 Deployment Control: Signal Cross Coupled.
Common causes
Common causes include Faulty Driver Sir Air Bag, Driver Sir Air Bag harness is open or shorted, Driver Sir Air Bag 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 55,161
How popular is this code, among other codes? Medium
Table of contents Created and updated by William Orellana on Nov 18, 2024
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Code B0002 Description

The Restraints Control Module (RCM) monitors all deployable device and sensor circuits for a signal cross coupled (short) between circuits. If the RCM detects a short between the circuits of one device and another device, it will store a DTC for each of the signal cross coupled faults in memory. The RCM sends a message to the Instrument Panel Cluster (IPC) to illuminate the air bag warning indicator. When a normal loop fault is present (one loop is either shorted to battery/ground, open circuit or low resistance), then signal cross coupled diagnostics will not be active. Once the normal loop fault is repaired, then the signal cross coupled diagnostics will resume.
OBDII Code B0002 - Driver Frontal Stage 2 Deployment Control: Signal Cross Coupled - AutoCodes.com
B0002 Code - Driver Frontal Stage 2 Deployment Control: Signal Cross Coupled

What are the Possible Causes of the DTC B0002?

  • Faulty Driver Sir Air Bag
  • Driver Sir Air Bag harness is open or shorted
  • Driver Sir Air Bag circuit poor electrical connection

How to Fix the DTC B0002?

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 B0002 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 B0002 code?

Need more information on how to fix the B0002 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B0002 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

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 B0002 Code

1. What are the common symptoms of OBDII code B0002?

- Common symptoms include the airbag warning light illuminating on the dashboard and a potential failure of the driver frontal airbag system.

2. What does the OBDII code B0002 indicate?

- OBDII code B0002 indicates an issue with the Driver Frontal Stage 2 Deployment Control: Signal Cross Coupled.

3. What are the possible causes of OBDII code B0002?

- The possible causes of this code include wiring issues, faulty sensors, a defective airbag control module, or a problem with the airbag deployment system.

4. How serious is OBDII code B0002?

- OBDII code B0002 is a serious issue as it relates to the deployment of the driver frontal airbag, which is a critical safety component in the event of a collision.

5. Can OBDII code B0002 be fixed at home?

- Fixing OBDII code B0002 may require specialized tools and expertise to diagnose and repair the underlying cause. It is recommended to seek professional help for this issue.

6. How much does it typically cost to repair OBDII code B0002?

- The cost of repairing OBDII code B0002 can vary depending on the specific cause of the issue, but it may involve replacing sensors, repairing wiring, or even replacing the airbag control module, which can range from a few hundred to over a thousand dollars.

7. Is it safe to drive with OBDII code B0002 present?

- It is not recommended to drive with OBDII code B0002 present, as it indicates a problem with the driver frontal airbag system, which could potentially fail to deploy in the event of a collision.

8. How can I prevent OBDII code B0002 from occurring?

- Regularly inspecting and maintaining the airbag system, checking for any signs of damage or wear, and addressing any warning lights promptly can help prevent OBDII code B0002 from occurring.

9. Can a DIY enthusiast diagnose OBDII code B0002?

- While a DIY enthusiast may be able to retrieve the code using an OBDII scanner, diagnosing and repairing the specific issue related to OBDII code B0002 may require specialized knowledge and tools best left to professionals.

10. How long does it take to repair OBDII code B0002?

- The repair time for OBDII code B0002 can vary depending on the cause of the issue and the availability of parts. It may take a few hours to a day or more to fully diagnose and repair the problem.

Discuss the causes and fixes for B0002 OBDII Code

  • is there a way to check airbag connectors after repairing them ? ive replaced the one on the clock spring of my 15 challenger and sent the rcm out to get repaired ,replaced seatswith newer oner had seatbelts repaired put a used dash with air bag in it .installed module with battery and fuse out and still have codes showing up b0010=2b b0002=2b b0052=13 b0050-11 b0020=13 b0072=13 b0070=13 b0090=13 ty all help is appreciated

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