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Engine-Codes – Generic – B1145

B1145 Code - Right Side Curtain Air Bag Module Open

Quick Answer

The B1145 diagnostic trouble code indicates that there is an issue with the right side curtain airbag module being open. Common causes include Faulty right side curtain airbag module, Loose or corroded electrical connections to the airbag module, Impact or physical damage to the right side curtain airbag. 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
B1145 indicates Right Side Curtain Air Bag Module Open.
Common causes
Common causes include Faulty right side curtain airbag module, Loose or corroded electrical connections to the airbag module, Impact or physical damage to the right side curtain airbag.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 07, 2024
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Code B1145 Description

The B1145 diagnostic trouble code indicates that there is an issue with the right side curtain airbag module being open. The curtain airbag system is a crucial safety feature designed to provide protection in the event of a side-impact collision or rollover. When this code is triggered, it means that the airbag on the right side of the vehicle may not deploy properly in the event of an accident, compromising the safety of the vehicle occupants.

OBDII Code B1145 - Right Side Curtain Air Bag Module Open
B1145 Code - Right Side Curtain Air Bag Module Open

Common Causes of B1145

  1. Faulty right side curtain airbag module
  2. Loose or corroded electrical connections to the airbag module
  3. Impact or physical damage to the right side curtain airbag
  4. Wiring harness issues
  5. Malfunctioning airbag control module

Symptoms of B1145

  1. Illuminated airbag warning light on the dashboard
  2. Error code B1145 displayed on the vehicle's diagnostic system
  3. Inability to reset the airbag warning light
  4. Inoperative right side curtain airbag during a crash test

How to Fix B1145

  1. Diagnose the issue using a scan tool to confirm the B1145 code and pinpoint the exact problem with the right side curtain airbag module.
  2. Inspect the electrical connections and wiring harness for any damage or corrosion. Repair or replace as needed.
  3. Check the physical condition of the right side curtain airbag module and replace it if it is found to be faulty or damaged.
  4. Clear the error codes from the vehicle's system and reset the airbag warning light.
  5. Perform a test to ensure that the right side curtain airbag deploys correctly after the repair.

Cost to Fix B1145

The cost of repairing a B1145 code related to the right side curtain airbag module can vary depending on the specific cause of the issue and the labor rates in your area. On average, the repair cost for this type of airbag module issue can range from $200 to $600, including parts and labor. However, it is essential to consult with a professional mechanic or dealership to get an accurate estimate based on your vehicle's make and model. Keep in mind that additional diagnostic time may be necessary to determine the exact cause of the problem, which can affect the overall cost of the repair.

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Code B1145 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 B1145 Code

1. What does the OBDII code B1145 mean?

The code B1145 indicates an open circuit in the right-side curtain airbag module, which prevents proper communication or deployment.

2. What are the common symptoms of the B1145 code?

Symptoms include an illuminated airbag warning light on the dashboard, a stored trouble code, and potential malfunction of the right-side curtain airbag during a collision.

3. What causes the B1145 code to appear?

Common causes include damaged wiring, loose or corroded electrical connections, a faulty right-side curtain airbag module, or a defective airbag control module.

4. Can I drive my car with the B1145 code?

While the car may still be drivable, the right-side curtain airbag may not deploy during an accident, posing a safety risk.

5. How is the B1145 code diagnosed?

A technician will scan the vehicle with an OBDII scanner, visually inspect the wiring and connectors for damage, and test the airbag module's resistance to confirm the fault.

6. How can I fix the B1145 code?

Repairs may involve replacing damaged wires, cleaning or reconnecting loose connectors, or replacing the right-side curtain airbag module if it is faulty.

7. How much does it cost to fix the B1145 code?

Repair costs vary depending on the issue but typically range from $150 to $600, with airbag module replacement being on the higher end.

8. Can resetting the airbag system clear the B1145 code?

Resetting the system might temporarily clear the code, but the underlying issue must be repaired to prevent the code from returning.

9. Is the B1145 code related to a recall?

In some cases, this code could be associated with a manufacturer recall. Check with your vehicle’s manufacturer or dealership for any applicable recalls.

10. What tools are needed to fix a B1145 code?

A diagnostic scanner, multimeter, and basic hand tools are typically required to diagnose and repair this issue properly.

Discuss the causes and fixes for B1145 OBDII Code

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