B1340 Infiniti Code - Front Door Satellite Sensor Right Communication Error
Quick Answer
The B1340 Infiniti code indicates a communication error with the front door satellite sensor located on the right side of the vehicle. Common causes include Faulty front door satellite sensor, Damaged wiring or connectors leading to the sensor, Corrosion or poor connections in the sensor circuit. 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
- B1340 Infiniti indicates Front Door Satellite Sensor Right Communication Error.
- Common causes
- Common causes include Faulty front door satellite sensor, Damaged wiring or connectors leading to the sensor, Corrosion or poor connections in the sensor circuit.
- 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 B1340 Infiniti Description
The B1340 Infiniti code indicates a communication error with the front door satellite sensor located on the right side of the vehicle. This sensor is responsible for detecting the position of the front door, ensuring proper operation of the door's locking mechanism, and providing input to the vehicle's security system. When this sensor fails to communicate properly, it can lead to issues with door locking/unlocking, alarm system functionality, and potentially affect the overall security of the vehicle.
Common Causes of B1340 Infiniti
- Faulty front door satellite sensor.
- Damaged wiring or connectors leading to the sensor.
- Corrosion or poor connections in the sensor circuit.
- Defective control module responsible for processing sensor data.
- Impact or physical damage to the front door sensor.
Symptoms of B1340 Infiniti
- Inability to lock or unlock the front door using the key fob or interior switch.
- Alarm system triggering intermittently or not functioning properly.
- Door ajar warning light staying on even when the door is closed.
- Loss of power door lock functionality.
- Security system malfunction or failure to arm/disarm.
How to Fix B1340 Infiniti
- Begin by diagnosing the specific cause of the communication error by using a diagnostic scanner to read the code and pinpoint the issue.
- Inspect the front door satellite sensor for any visible damage or signs of malfunction. Replace the sensor if necessary.
- Check the wiring and connectors leading to the sensor for any damage, corrosion, or loose connections. Repair or replace as needed.
- Test the control module that processes the sensor data to ensure it is functioning correctly. Replace if faulty.
- Clear the diagnostic trouble code from the vehicle's system and test the front door satellite sensor to ensure proper communication and functionality.
Cost to Fix B1340 Infiniti
The typical repair costs for addressing a B1340 Infiniti code can vary depending on the specific cause of the issue. In general, replacing a front door satellite sensor can cost between $100 and $300, including parts and labor. If wiring repairs or control module replacement are necessary, the total repair cost could range from $200 to $500 or more. It's important to note that diagnostic time and labor rates at auto repair shops can vary, with hourly rates typically ranging from $80 to $150. Factors such as location, vehicle make and model, and engine type can also influence the final repair costs. It's recommended to consult with a qualified mechanic or dealership for a more accurate estimate based on your specific vehicle and situation.
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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.
Frequently Asked Questions about B1340 Infiniti Code
1. What does the OBDII code B1340 mean for my Infiniti?
The B1340 code indicates a communication error with the front door satellite sensor on the right side, often related to wiring or sensor issues.
2. What are the symptoms of a B1340 code in my Infiniti?
Symptoms may include the airbag warning light illuminating, malfunctioning side airbags, or a lack of communication with the right front door satellite sensor.
3. What causes the B1340 code to appear?
Common causes include damaged wiring, a faulty front door satellite sensor, a poor electrical connection, or issues with the airbag control module.
4. Can I drive my Infiniti with a B1340 code?
While the vehicle may still be drivable, the airbag system could be compromised, so it’s recommended to address the issue promptly for safety.
5. How do I diagnose the B1340 code?
Diagnosis involves checking the wiring and connectors for damage, testing the front door satellite sensor, and verifying communication with a scan tool.
6. How can I fix the B1340 code on my Infiniti?
Repairs may include replacing the faulty sensor, repairing or replacing damaged wiring, or addressing connector issues.
7. Is the B1340 code specific to Infiniti vehicles?
The code is specific to Infiniti and Nissan vehicles that use a satellite sensor system for airbag communication.
8. What tools are needed to troubleshoot the B1340 code?
You’ll need an OBDII scanner, a multimeter to check wiring continuity, and possibly a service manual for your Infiniti model.
9. How much does it cost to fix the B1340 code?
Repair costs vary but can range from $100 to $500 depending on whether the issue is wiring-related or requires sensor replacement.
10. Can a loose connection trigger the B1340 code?
Yes, a loose or corroded connector at the satellite sensor or airbag control module can trigger this code.
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