AutoCodesGeneric – B2296

B2296 Code - Restraint System Impact Sensor Fault

Quick Answer

The Restraints Control Module (RCM) continuously communicates with all impact sensors for external and internal sensor data. Common causes include Faulty Impact Sensor, Impact Sensor harness is open or shorted, Impact Sensor 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
B2296 indicates Restraint System Impact Sensor Fault.
Common causes
Common causes include Faulty Impact Sensor, Impact Sensor harness is open or shorted, Impact Sensor 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 8,278
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Oct 31, 2019
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Code B2296 Description

The Restraints Control Module (RCM) continuously communicates with all impact sensors for external and internal sensor data. The RCM also continuously monitors all of the impact sensor circuits for a short to voltage, short to ground and open circuits. If the RCM detects any communication or circuit faults with any of the impact sensors, it will store DTC B2296 in memory and send a message to the instrument cluster (IC) module to illuminate the air bag warning indicator.
OBDII Code B2296 - Restraint System Impact Sensor Fault - AutoCodes.com
B2296 Code - Restraint System Impact Sensor Fault

What are the Possible Causes of the DTC B2296?

  • Faulty Impact Sensor
  • Impact Sensor harness is open or shorted
  • Impact Sensor circuit poor electrical connection
  • Faulty Restraints Control Module (RCM)

How to Fix the DTC B2296?

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 B2296 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 B2296 code?

Need more information on how to fix the B2296 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2296 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 B2296 Code

1. What are common symptoms of OBDII code B2296 (Restraint System Impact Sensor Fault)?

- Common symptoms include the airbag warning light illuminating on the dashboard and potential issues with the vehicle's airbag system.

2. What can cause OBDII code B2296 to trigger?

- This code is typically triggered by a fault in the impact sensor within the vehicle's restraint system, which may be caused by wiring issues, sensor malfunctions, or physical damage.

3. How serious is OBDII code B2296 (Restraint System Impact Sensor Fault)?

- This code indicates a fault in the vehicle's safety restraint system, particularly the impact sensor. It is a serious issue that may affect the proper deployment of airbags in the event of a collision.

4. Can I continue driving with OBDII code B2296 present?

- It is not recommended to continue driving with this code active, as it may compromise the functionality of the vehicle's airbag system. It is advisable to address the issue promptly.

5. How can I diagnose and repair OBDII code B2296?

- Diagnosing and repairing this code typically involves checking the wiring and connections related to the impact sensor, testing the sensor itself for faults, and addressing any damaged components as needed.

6. Will resetting the OBDII code B2296 fix the issue?

- Simply resetting the code may temporarily clear the warning light, but it will not fix the underlying problem with the impact sensor. The issue should be properly diagnosed and repaired to ensure the safety system functions correctly.

7. Is it safe to reset the OBDII code B2296 and ignore it?

- Ignoring the code and not addressing the underlying issue with the impact sensor can compromise the vehicle's safety in the event of a collision. It is important to have the problem diagnosed and repaired promptly.

8. How much does it typically cost to repair OBDII code B2296?

- The cost of repairing this code can vary depending on the cause of the fault, the extent of the damage, and labor rates. It is advisable to consult a professional technician for an accurate assessment of repair costs.

9. Can a DIY enthusiast fix OBDII code B2296 at home?

- While some aspects of diagnosing and repairing this code may be possible for experienced DIY enthusiasts, working on the vehicle's safety restraint system, particularly the impact sensor, is complex and best left to professionals for safety reasons.

10. How often does OBDII code B2296 occur in vehicles?

- The occurrence of this code can vary among vehicles, but it is not uncommon in older vehicles or those that have experienced impact or wiring issues. Regular maintenance and inspections can help prevent such faults.

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