B1202 Nissan 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
- B1202 Nissan 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 B1202 Nissan 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 B1202 Nissan?
- Faulty Diagnosis Sensor Unit
- Diagnosis Sensor Unit harness is open or shorted
- Diagnosis Sensor Unit circuit poor electrical connection
How to Fix the DTC B1202 Nissan?
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 B1202 Nissan 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.
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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 B1202 Nissan Code
1. What are the common symptoms of OBDII code B1202 in a Nissan related to the Diagnosis Sensor Unit?
- Common symptoms include issues with the airbag system, such as the airbag warning light staying illuminated on the dashboard.
2. What are the possible causes of OBDII code B1202 in a Nissan?
- The code B1202 typically indicates a fault with the Diagnosis Sensor Unit, which could be caused by wiring issues, a faulty sensor unit, or a problem with the airbag control module.
3. How can I diagnose the OBDII code B1202 related to the Diagnosis Sensor Unit in my Nissan?
- To diagnose the B1202 code, it is recommended to use a diagnostic scanner to read the code and pinpoint the specific issue with the Diagnosis Sensor Unit. Additionally, checking the wiring for any damage or loose connections is advised.
4. Can I repair the OBDII code B1202 issue related to the Diagnosis Sensor Unit in my Nissan at home?
- While some basic troubleshooting like checking wiring connections can be done at home, repairing the Diagnosis Sensor Unit itself might require specialized tools and expertise. It is recommended to consult a professional mechanic for proper diagnosis and repair.
5. Are there any safety concerns associated with the OBDII code B1202 in a Nissan?
- Yes, since the B1202 code is related to the airbag system, there could be safety concerns if the issue is not addressed promptly. It is crucial to have the airbag system inspected and repaired to ensure proper functionality in case of an accident.
6. How much does it typically cost to repair OBDII code B1202 in a Nissan?
- The cost of repairing the B1202 code can vary depending on the exact cause of the issue. Simple fixes like repairing wiring may be less expensive, while replacing the Diagnosis Sensor Unit or other components can be more costly. It is best to get a professional estimate for an accurate cost.
7. Can driving with the OBDII code B1202 in a Nissan cause further damage to the vehicle?
- Continuing to drive with the B1202 code unresolved may not cause immediate damage to the vehicle, but it can pose a risk in case of an accident where the airbag system is needed. It is recommended to address the issue promptly to ensure the safety features function correctly.
8. Will resetting the OBDII code B1202 in a Nissan make it go away permanently?
- Resetting the B1202 code may temporarily turn off the warning light, but if the underlying issue with the Diagnosis Sensor Unit is not fixed, the code is likely to reappear. It is important to diagnose and repair the root cause of the problem to prevent the code from coming back.
9. Is it safe to attempt DIY repairs for the OBDII code B1202 associated with the Diagnosis Sensor Unit?
- While basic checks like inspecting wiring connections can be done by DIY enthusiasts, working on the airbag system or Diagnosis Sensor Unit is best left to professionals. Safety is paramount when dealing with systems that affect airbag deployment.
10. How long does it typically take to repair the OBDII code B1202 related to the Diagnosis Sensor Unit in a Nissan?
- The repair time for the B1202 code can vary based on the exact cause of the issue and the complexity of the repair. Simple fixes may take a few hours, while more extensive repairs could require leaving the vehicle at the repair shop for a day or longer.
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