B1124 Code - Diagnosis Sensor Unit
Quick Answer
The B1124 code pertains to an issue with the Diagnosis Sensor Unit in a vehicle. Common causes include Damaged wiring or connectors, Faulty Diagnosis Sensor Unit, Issues with the onboard computer. 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
- B1124 indicates Diagnosis Sensor Unit.
- Common causes
- Common causes include Damaged wiring or connectors, Faulty Diagnosis Sensor Unit, Issues with the onboard computer.
- 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 B1124 Description
The B1124 code pertains to an issue with the Diagnosis Sensor Unit in a vehicle. This sensor is responsible for monitoring various systems within the vehicle and transmitting data to the onboard computer for analysis. When this sensor unit malfunctions or fails, it can have a significant impact on the vehicle's performance and overall functionality.
Common Causes of B1124
- Damaged wiring or connectors
- Faulty Diagnosis Sensor Unit
- Issues with the onboard computer
- Corrosion or moisture in the sensor unit
Symptoms of B1124
- Check Engine Light is illuminated
- Decreased fuel efficiency
- Engine misfires
- Rough idling
- Stalling
How to Fix B1124
- Diagnose the specific cause of the issue using a diagnostic scanner
- Inspect wiring and connectors for damage or corrosion
- Replace the faulty Diagnosis Sensor Unit if necessary
- Clear the diagnostic code and reset the Check Engine Light
- Test drive the vehicle to ensure the issue has been resolved
Cost to Fix B1124
The typical repair costs for addressing the B1124 code can vary depending on the specific cause of the issue and the labor rates in your area. On average, you can expect to pay between $150 and $400 for parts and labor. However, it's essential to note that the final cost may be higher or lower based on factors such as the make and model of your vehicle, the location of the repair shop, and the extent of the repairs needed. Be sure to inquire about specific diagnosis time and labor rates at your chosen auto repair shop for a more accurate estimate.
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Code B1124 Information for Specific Makes
- B1124 Infiniti — Diagnosis Sensor Unit
- B1124 Nissan — Diagnosis Sensor Unit
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 B1124 Code
1. What does OBDII code B1124 mean?
B1124 refers to a fault in the Diagnosis Sensor Unit, often linked to the airbag system's control module.
2. What are the common symptoms of code B1124?
Common symptoms include the airbag warning light illuminating on the dashboard and a potential malfunction of airbag deployment in an accident.
3. What causes the B1124 code to appear?
The code can be caused by a faulty diagnosis sensor unit, damaged wiring or connectors in the airbag system, or a software glitch in the airbag control module.
4. Can I drive my car with a B1124 code?
While the car may still be drivable, it is unsafe, as the airbag system may not function properly in the event of a collision.
5. How do I fix the B1124 code?
Repairs may involve inspecting and replacing the diagnosis sensor unit, repairing damaged wiring or connectors, or reprogramming the airbag control module.
6. How is the B1124 code diagnosed?
A technician will use a diagnostic scanner to confirm the code, inspect the airbag system wiring and connectors, and test the diagnosis sensor unit for faults.
7. Can a blown fuse cause the B1124 code?
Yes, a blown airbag system fuse can prevent the diagnosis sensor unit from functioning, triggering the code.
8. How much does it cost to repair the B1124 code?
The repair cost varies depending on the issue, but replacing the diagnosis sensor unit typically costs between $200 and $600, excluding labor.
9. Does the B1124 code always mean the diagnosis sensor unit is faulty?
No, the issue could also be due to wiring problems, connector issues, or software errors rather than the sensor unit itself.
10. Should the airbag system be reset after fixing the B1124 code?
Yes, after repairs, the airbag system should be reset and the code cleared using a diagnostic scanner to ensure proper functionality.
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