B112D Mercury Code - Rear Window Defrost LED Circuit
Quick Answer
The Body Control Module (BCM) monitors the Rear Window Defrost LED. Common causes include Faulty Rear Window Defrost LED, Rear Window Defrost LED harness is open or shorted, Rear Window Defrost LED circuit poor electrical connection. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
- What it means
- B112D Mercury indicates Rear Window Defrost LED Circuit.
- Common causes
- Common causes include Faulty Rear Window Defrost LED, Rear Window Defrost LED harness is open or shorted, Rear Window Defrost LED circuit poor electrical connection.
- Severity
- Low - monitor the vehicle and repair when practical.
- Can I drive?
- The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
Code B112D Mercury Description
What are the Possible Causes of the DTC B112D Mercury?
- Faulty Rear Window Defrost LED
- Rear Window Defrost LED harness is open or shorted
- Rear Window Defrost LED circuit poor electrical connection
- Faulty Body Control Module (BCM)
How to Fix the DTC B112D Mercury?
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.
Code Tech Notes
B112D:15 Rear Window Defrost LED Circuit Short to Battery or Open
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B112D Mercury 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 B112D Mercury Code
1. What are the common symptoms of OBDII code B112D (Mercury) related to the Rear Window Defrost LED Circuit?
The common symptoms include the rear window defrost LED not illuminating, the rear window defrost not functioning properly, and a warning light on the dashboard.
2. What are the possible causes of OBDII code B112D (Mercury) for the Rear Window Defrost LED Circuit?
Possible causes may include a faulty rear window defrost switch, a damaged rear window defrost grid, a wiring issue, or a problem with the body control module.
3. How can I diagnose the OBDII code B112D (Mercury) for the Rear Window Defrost LED Circuit?
Diagnosing this code may involve visually inspecting the rear window defrost components, testing the rear window defrost switch, checking the wiring for any damage, and using a diagnostic scan tool to retrieve fault codes.
4. Can I still drive my Mercury with OBDII code B112D for the Rear Window Defrost LED Circuit?
It is generally safe to drive the vehicle with this code, but it is recommended to address the issue promptly to ensure proper functionality of the rear window defrost.
5. What are some repair tips for fixing OBDII code B112D (Mercury) related to the Rear Window Defrost LED Circuit?
Repair tips may include checking and repairing any damaged wiring, replacing a faulty rear window defrost switch, repairing the rear window defrost grid, or reprogramming the body control module.
6. Is it possible to reset the OBDII code B112D (Mercury) for the Rear Window Defrost LED Circuit without repairs?
Resetting the code without addressing the underlying issue may temporarily clear the warning light, but it is likely to reappear until the root cause is fixed.
7. Can extreme weather conditions affect the occurrence of OBDII code B112D (Mercury) for the Rear Window Defrost LED Circuit?
Extreme cold or hot weather conditions can sometimes exacerbate issues with the rear window defrost system, potentially triggering this code.
8. How much does it typically cost to repair OBDII code B112D (Mercury) for the Rear Window Defrost LED Circuit?
The cost of repairs can vary depending on the specific cause of the issue, but it may range from a simple repair to a more involved replacement of components.
9. Are there any recalls or technical service bulletins related to OBDII code B112D (Mercury) for the Rear Window Defrost LED Circuit?
It is advisable to check with a Mercury dealership or online resources to see if there are any recalls or technical service bulletins addressing this specific OBDII code.
10. Can a DIY enthusiast with basic automotive knowledge fix OBDII code B112D (Mercury) for the Rear Window Defrost LED Circuit?
Depending on the cause of the issue, DIY enthusiasts with some automotive knowledge may be able to address simpler fixes such as checking and repairing wiring or replacing components like the rear window defrost switch.
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