B1205 Infiniti Code - Diagnosis Sensor Unit
Quick Answer
The Air Bag Diagnosis Sensor Unit detects the whole SRS electrical system and displays the malfunction either by illuminating or blinking the air bag warning lamp in the combination meter. Common causes include Faulty Diagnosis Sensor Unit, Diagnosis Sensor Unit harness is open or shorted, Diagnosis Sensor Unit 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
- B1205 Infiniti indicates Diagnosis Sensor Unit.
- Common causes
- Common causes include Faulty Diagnosis Sensor Unit, Diagnosis Sensor Unit harness is open or shorted, Diagnosis Sensor Unit 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.
Code B1205 Infiniti Description
The Air Bag Diagnosis Sensor Unit contains the “G†sensors for both frontal and side collisions and spare battery function in case of main battery damaged in a collision.
What are the Possible Causes of the DTC B1205 Infiniti?
- Faulty Diagnosis Sensor Unit
- Diagnosis Sensor Unit harness is open or shorted
- Diagnosis Sensor Unit circuit poor electrical connection
How to Fix the DTC B1205 Infiniti?
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 B1205 Infiniti 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 B1205 Infiniti code?
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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 B1205 Infiniti Code
1. What does the OBDII code B1205 mean for an Infiniti?
Code B1205 indicates a malfunction in the Diagnosis Sensor Unit, which is part of the airbag system responsible for monitoring and controlling deployment.
2. What are the common symptoms of the B1205 code in an Infiniti?
Common symptoms include the airbag warning light staying illuminated and potential issues with airbag deployment functionality.
3. What causes the B1205 code to appear in my Infiniti?
Causes can include a faulty diagnosis sensor unit, damaged wiring or connectors in the airbag system, or issues with the control module.
4. Is it safe to drive with the B1205 code active in my Infiniti?
While the vehicle may still drive normally, it is unsafe as the airbag system may not function properly in the event of a collision.
5. How do I diagnose the B1205 code in my Infiniti?
Diagnosis typically involves using a diagnostic scan tool to confirm the code, inspecting the diagnosis sensor unit, and checking for damaged or loose wiring and connectors.
6. Can I reset the B1205 code without repairing the issue?
Resetting the code without addressing the underlying issue may temporarily turn off the airbag warning light, but the problem will likely recur, compromising safety.
7. How do I fix the B1205 code on my Infiniti?
Repairs may involve replacing the diagnosis sensor unit, repairing damaged wiring, or ensuring all connectors are secure and functioning correctly.
8. What tools are needed to repair the B1205 code on an Infiniti?
You will need a diagnostic scan tool compatible with Infiniti vehicles, a multimeter for electrical testing, and possibly replacement parts like the diagnosis sensor unit.
9. How much does it cost to repair the B1205 code on an Infiniti?
Costs can vary depending on the issue, but replacing the diagnosis sensor unit typically ranges from $300 to $600, including labor.
10. Can a faulty airbag control module trigger the B1205 code in an Infiniti?
Yes, a malfunctioning airbag control module can sometimes cause this code if it fails to communicate properly with the diagnosis sensor unit.
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