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B1345 Infiniti Code - Front Door Satellite Sensor Left Communication Error

Quick Answer

The B1345 Infiniti trouble code indicates a communication error between the front door satellite sensor on the left side of the vehicle and the central control module. Common causes include Wiring harness damage or corrosion affecting communication, Faulty front door satellite sensor, Issues with the central control module. 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
B1345 Infiniti indicates Front Door Satellite Sensor Left Communication Error.
Common causes
Common causes include Wiring harness damage or corrosion affecting communication, Faulty front door satellite sensor, Issues with the central control module.
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 12, 2024
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Code B1345 Infiniti Description

The B1345 Infiniti trouble code indicates a communication error between the front door satellite sensor on the left side of the vehicle and the central control module. This sensor is responsible for detecting impacts and collisions on the front left side of the vehicle, providing important data for the airbag system and other safety features. When communication with the sensor is disrupted, it can lead to malfunctions in the airbag deployment system, compromising the vehicle's safety in the event of a crash.

OBDII Code B1345 Infiniti - Front Door Satellite Sensor Left Communication Error
B1345 Infiniti Code - Front Door Satellite Sensor Left Communication Error

Common Causes of B1345 Infiniti

  1. Wiring harness damage or corrosion affecting communication
  2. Faulty front door satellite sensor
  3. Issues with the central control module
  4. Loose or disconnected connections between components
  5. Water or moisture intrusion affecting sensor operation

Symptoms of B1345 Infiniti

  1. Airbag warning light illuminated on the dashboard
  2. Inconsistent or delayed airbag deployment
  3. Loss of communication with the front door satellite sensor
  4. Fault codes related to airbag systems stored in the vehicle's computer
  5. Unusual behavior of other safety features that rely on data from the front door satellite sensor

How to Fix B1345 Infiniti

  1. Begin by conducting a thorough inspection of the wiring harness, looking for any signs of damage, corrosion, or loose connections. Repair or replace any faulty wiring as necessary.
  2. Test the front door satellite sensor to determine if it is functioning properly. Replace the sensor if it is found to be faulty.
  3. Check the connections between the sensor and the central control module, ensuring they are secure and free from corrosion. Clean or tighten connections as needed.
  4. Use a diagnostic tool to reset the trouble code and clear any stored fault codes in the vehicle's computer. Test the airbag system to verify that the communication error has been resolved.
  5. If the issue persists, further diagnosis may be required to pinpoint the exact cause of the communication error, potentially involving more advanced diagnostic equipment or assistance from a professional technician.

Cost to Fix B1345 Infiniti

The typical repair costs for addressing a B1345 Infiniti trouble code can vary depending on the specific cause of the communication error and the extent of the repairs needed. In general, parts and labor for this type of repair could range from $200 to $500 or more. However, it's important to note that diagnosis time and labor rates at auto repair shops can vary significantly based on factors such as location, vehicle make and model, and engine type. It's recommended to contact local auto repair shops for a more accurate estimate based on your specific circumstances.

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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 B1345 Infiniti Code

1. What are the common symptoms of OBDII code B1345 in an Infiniti related to the Front Door Satellite Sensor Left Communication Error?

The common symptoms include issues with the airbag system, illuminated airbag warning light on the dashboard, and potential malfunction of the front door satellite sensor on the left side.

2. What are the possible causes of OBDII code B1345 in an Infiniti indicating a Front Door Satellite Sensor Left Communication Error?

Possible causes include loose or damaged wiring connections, a faulty front door satellite sensor on the left side, issues with the airbag control module, or a communication error within the system.

3. How can I diagnose OBDII code B1345 in my Infiniti related to the Front Door Satellite Sensor Left Communication Error?

Diagnosis typically involves using an OBDII scanner to retrieve the specific fault code, inspecting the wiring and connections related to the front door satellite sensor on the left side, and testing the sensor and related components for proper functionality.

4. Can I repair OBDII code B1345 in my Infiniti myself?

While some DIY enthusiasts may attempt to address this issue, it is recommended to consult with a professional mechanic or dealership familiar with Infiniti vehicles due to the complexity of the airbag system and safety implications.

5. Are there any temporary fixes for OBDII code B1345 in an Infiniti until I can get it repaired?

It is not advisable to implement temporary fixes for airbag system-related issues like B1345, as they can compromise the safety of the vehicle and occupants. Prompt professional attention is recommended.

6. How much does it typically cost to repair OBDII code B1345 in an Infiniti concerning the Front Door Satellite Sensor Left Communication Error?

The cost of repairs can vary depending on the exact cause of the issue, labor rates in your area, and whether any parts need to be replaced. It is best to get a diagnostic assessment from a qualified technician for an accurate estimate.

7. Can OBDII code B1345 in an Infiniti cause the airbags to deploy unexpectedly?

While it is unlikely for this specific communication error to trigger unexpected airbag deployment, any fault within the airbag system should be addressed promptly to ensure proper operation in the event of a collision.

8. Will driving with OBDII code B1345 in my Infiniti pose a safety risk?

Continuing to drive with unresolved airbag system issues like B1345 can pose a safety risk, as the airbags may not deploy correctly in the event of a crash. It is important to address this concern promptly.

9. How long does it typically take to repair OBDII code B1345 in an Infiniti associated with the Front Door Satellite Sensor Left Communication Error?

The repair time can vary depending on the exact cause of the issue, availability of parts, and the workload of the repair shop. In some cases, it can be resolved within a few hours, while more complex issues may take longer.

10. Are there any recalls or technical service bulletins related to OBDII code B1345 in Infiniti vehicles?

It is advisable to check with the manufacturer or authorized service centers for any relevant recalls or technical service bulletins related to OBDII code B1345 and the Front Door Satellite Sensor Left Communication Error in Infiniti vehicles.

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