B118C Mazda Code - BSM Indicator Light Left Circuit Malfunction
Quick Answer
The Blind Spot Monitoring (BSM) Control Module monitors the BSM Indicator Light Left. Common causes include Faulty Blind Spot Monitoring (BSM) Indicator Light Left, Blind Spot Monitoring (BSM) Indicator Light Left harness is open or shorted, Blind Spot Monitoring (BSM) Indicator Light Left circuit poor electrical connection. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
- What it means
- B118C Mazda indicates BSM Indicator Light Left Circuit Malfunction.
- Common causes
- Common causes include Faulty Blind Spot Monitoring (BSM) Indicator Light Left, Blind Spot Monitoring (BSM) Indicator Light Left harness is open or shorted, Blind Spot Monitoring (BSM) Indicator Light Left circuit poor electrical connection.
- Severity
- Moderate - service should be scheduled soon.
- Can I drive?
- The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
Code B118C Mazda Description
What are the Possible Causes of the DTC B118C Mazda?
- Faulty Blind Spot Monitoring (BSM) Indicator Light Left
- Blind Spot Monitoring (BSM) Indicator Light Left harness is open or shorted
- Blind Spot Monitoring (BSM) Indicator Light Left circuit poor electrical connection
- Faulty Blind Spot Monitoring (BSM) Control Module
How to Fix the DTC B118C Mazda?
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 B118C Mazda 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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Frequently Asked Questions about B118C Mazda Code
1. What does the OBDII code B118C indicate on a Mazda?
The code B118C indicates a malfunction in the Blind Spot Monitoring (BSM) Indicator Light for the left side circuit on a Mazda vehicle.
2. What are common symptoms of code B118C in a Mazda?
Common symptoms include the left BSM indicator light not working, staying on continuously, or flashing irregularly, potentially accompanied by a warning message on the dashboard.
3. What can cause the B118C code to appear on a Mazda?
Causes of the B118C code can include issues like a faulty BSM indicator light, damaged wiring or connectors in the BSM system, or a malfunctioning BSM control module.
4. How is the B118C code diagnosed in a Mazda?
Diagnosis involves using a scan tool to read the fault code and examining the BSM system's wiring and connectors for damage. Technicians may also test the functionality of the BSM indicator light and control module.
5. What are the steps to repair the B118C code on a Mazda?
Repair steps may include replacing the faulty BSM indicator light, repairing or replacing damaged wiring or connectors, or replacing a defective BSM control module.
6. Is it safe to drive a Mazda with the B118C code?
While it may be safe to drive, the functionality of the Blind Spot Monitoring system is compromised, which could increase the risk of accidents, especially when changing lanes. It’s advisable to get it repaired as soon as possible.
7. Does the B118C code affect other parts of the Mazda’s safety system?
The B118C code specifically affects the Blind Spot Monitoring system. While it doesn't directly impact other safety systems, the overall situational awareness and safety on the road could be reduced.
8. Can a faulty BSM indicator lead to other issues in a Mazda?
A faulty BSM indicator can lead to a lack of driver awareness regarding vehicles in the blind spot, which might increase the risk of collision, especially on busy roads or highways.
9. What tools are needed to fix the B118C code on a Mazda?
Repairing the B118C code typically requires a diagnostic scanner, basic hand tools for accessing the BSM components, and possibly replacement parts like a new BSM indicator light or wiring connectors.
10. How often does the B118C code occur in Mazdas?
The frequency of the B118C code can vary based on the model and usage of the vehicle. It’s more commonly reported in vehicles that have higher mileage or have been exposed to harsh driving conditions.
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