B118C 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 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 Description
What are the Possible Causes of the DTC B118C?
- 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?
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 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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Information for Specific Makes
- B118C Mazda — BSM Indicator Light Left Circuit Malfunction
Frequently Asked Questions about B118C Code
1. What are the common symptoms of OBDII code B118C (BSM Indicator Light Left Circuit Malfunction)?
The common symptoms include the left blind spot monitoring (BSM) indicator light not illuminating or flashing on the dashboard.
2. What can cause the B118C OBDII code to trigger?
The B118C code is typically triggered by a malfunction in the circuit that controls the left BSM indicator light, which can be caused by wiring issues, a faulty indicator light, or a problem with the BSM module.
3. How serious is a BSM Indicator Light Left Circuit Malfunction?
While the malfunction may not directly affect the drivability of the vehicle, it can impact the effectiveness of the blind spot monitoring system in detecting vehicles in the left blind spot, potentially compromising safety.
4. How can I diagnose the cause of the B118C code?
Diagnosing the B118C code involves visually inspecting the wiring and connections related to the left BSM indicator light, testing the indicator light itself, and using a scan tool to check for faults in the BSM module.
5. Can I repair the BSM Indicator Light Left Circuit Malfunction myself?
If you have experience with automotive electrical systems and the necessary tools, you may be able to repair the issue yourself by addressing wiring faults, replacing the indicator light, or repairing the BSM module. Otherwise, it's recommended to seek professional assistance.
6. Will the B118C code reset on its own after repairs are made?
Once the underlying issue causing the B118C code is resolved, you may need to clear the code using an OBDII scan tool to reset the system and turn off the warning light on the dashboard.
7. Are there any temporary solutions for the BSM Indicator Light Left Circuit Malfunction?
If you encounter the B118C code and the left BSM indicator light isn't working, you can manually check your blind spots more frequently while driving to compensate for the lack of visual alerts.
8. How much does it typically cost to repair a BSM Indicator Light Left Circuit Malfunction?
The cost of repairing the B118C code can vary depending on the cause of the issue, the extent of the repairs needed, and whether you choose to address the problem yourself or take your vehicle to a professional mechanic.
9. Can a BSM Indicator Light Left Circuit Malfunction cause other issues in the vehicle?
While the B118C code specifically relates to the left BSM indicator light circuit, it's essential to address the malfunction promptly to prevent any potential impact on the overall functionality of the blind spot monitoring system.
10. Is it safe to continue driving with the B118C OBDII code present?
While driving with the B118C code may not pose an immediate safety risk, it's still recommended to address the issue promptly to ensure the proper functioning of the blind spot monitoring system and maintain optimal safety on the road.
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