B1779 Code - Mirror Driver Down Circuit Open
Quick Answer
The B1779 diagnostic trouble code (DTC) indicates that there is an open circuit in the mirror driver down circuit. Common causes include Damaged or frayed wiring in the mirror circuit, Faulty mirror switch, Malfunctioning mirror motor. 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
- B1779 indicates Mirror Driver Down Circuit Open.
- Common causes
- Common causes include Damaged or frayed wiring in the mirror circuit, Faulty mirror switch, Malfunctioning mirror motor.
- 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 B1779 Description
The B1779 diagnostic trouble code (DTC) indicates that there is an open circuit in the mirror driver down circuit. This code is typically associated with power mirrors in vehicles. When this code is triggered, it means that there is a break or interruption in the electrical circuit that controls the driver side mirror's downward movement. This can prevent the mirror from adjusting properly, which can be a safety hazard as it affects the driver's visibility while operating the vehicle.
Common Causes of B1779
- Damaged or frayed wiring in the mirror circuit.
- Faulty mirror switch.
- Malfunctioning mirror motor.
- Defective mirror control module.
- Corrosion or poor connections in the electrical system.
Symptoms of B1779
- Inability to adjust the driver side mirror downward.
- Erratic movement or lack of movement in the driver side mirror.
- Illumination of the mirror adjustment control on the driver side door panel.
- Warning light on the instrument cluster indicating a power mirror system fault.
How to Fix B1779
- Begin by visually inspecting the wiring harness for any visible damage or breaks. Repair or replace any damaged wiring.
- Test the mirror switch using a multimeter to ensure it is functioning correctly. Replace the switch if necessary.
- Check the mirror motor for proper operation by applying power directly to it. Replace the motor if it fails to move.
- Test the mirror control module for faults using a diagnostic tool. Replace the module if it is found to be defective.
- Clear the DTC from the vehicle's computer using an OBD-II scanner after completing the repairs to reset the system.
Cost to Fix B1779
The cost of repairing a B1779 code can vary depending on the specific cause of the issue and the labor rates in your area. On average, the repair for this type of electrical issue can range from $100 to $300, including parts and labor. Keep in mind that diagnostic time and labor rates at auto repair shops can vary, so it's recommended to obtain quotes from multiple shops to ensure you are getting a fair price for the repair.
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Code B1779 Information for Specific Makes
- B1779 Nissan — Hydraulic Pump Temperature Sensor
Frequently Asked Questions about B1779 Code
1. What are the common symptoms of OBDII code B1779 (Mirror Driver Down Circuit Open)?
- The common symptoms include non-functioning or erratic movement of the driver-side mirror.
2. What can cause the Mirror Driver Down Circuit Open code (B1779) to appear?
- Possible causes include a damaged mirror motor, faulty mirror switch, wiring issues, or a blown fuse.
3. How can I diagnose the Mirror Driver Down Circuit Open code (B1779) in my vehicle?
- You can start by checking the fuse related to the mirror circuit, inspecting the mirror switch, and testing the wiring and mirror motor for continuity.
4. Is it safe to continue driving with the Mirror Driver Down Circuit Open issue (B1779) unresolved?
- While it may not affect the drivability of the vehicle, it is recommended to address the issue promptly to ensure proper functionality of the driver-side mirror.
5. Can I repair the Mirror Driver Down Circuit Open problem (B1779) myself?
- Depending on your automotive repair skills, you may be able to fix the issue by replacing the mirror motor, repairing wiring, or troubleshooting the mirror switch.
6. How much does it typically cost to repair the Mirror Driver Down Circuit Open code (B1779) at a professional auto repair shop?
- Costs can vary based on the extent of the issue and the labor rates of the repair shop, but expect to budget for parts and labor for a mirror motor replacement or wiring repair.
7. Will resetting the OBDII code B1779 make the issue go away permanently?
- Resetting the code may temporarily clear the warning light, but if the underlying issue is not resolved, the code is likely to reappear after some time.
8. Are there any preventive maintenance tips to avoid encountering the Mirror Driver Down Circuit Open code (B1779)?
- Regularly inspecting the functionality of your vehicle's mirrors, addressing any issues promptly, and avoiding excessive force when adjusting the mirrors can help prevent this code from appearing.
9. Can extreme weather conditions contribute to the Mirror Driver Down Circuit Open problem (B1779)?
- Yes, extreme heat or cold can sometimes cause electrical components in the mirror system to malfunction, leading to the B1779 trouble code.
10. How long does it typically take to repair the Mirror Driver Down Circuit Open issue (B1779)?
- The repair duration can vary based on the exact cause of the problem and the complexity of accessing and replacing the faulty components, but it may range from 1 to 3 hours at a repair shop.
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