B1746 Code - Mirror Passenger Horizontal Switch Circuit Open
Quick Answer
The B1746 code indicates that there is an issue with the mirror passenger horizontal switch circuit being open, meaning there is a lack of continuity in the circuit. Common causes include Faulty mirror switch, Broken or damaged wiring in the mirror circuit, Defective 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
- B1746 indicates Mirror Passenger Horizontal Switch Circuit Open.
- Common causes
- Common causes include Faulty mirror switch, Broken or damaged wiring in the mirror circuit, Defective 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 B1746 Description
The B1746 code indicates that there is an issue with the mirror passenger horizontal switch circuit being open, meaning there is a lack of continuity in the circuit. This can affect the functionality of the passenger side mirror in terms of adjusting its horizontal position. The mirror may not be able to move horizontally as intended, which can impact visibility and safety while driving.
Common Causes of B1746
- Faulty mirror switch.
- Broken or damaged wiring in the mirror circuit.
- Defective mirror motor.
- Corrosion or poor connections in the circuit.
- Electrical issues in the vehicle's wiring system.
Symptoms of B1746
- Inability to adjust the passenger side mirror horizontally.
- Malfunctioning mirror switch controls.
- Strange noises coming from the mirror when attempting to adjust it.
- Mirror moves erratically or not at all.
- Dashboard warning light related to the mirror system.
How to Fix B1746
- Begin by inspecting the mirror switch for any visible damage or wear. Replace the switch if necessary.
- Check the wiring connected to the mirror for any breaks or frays. Repair or replace damaged wiring as needed.
- Test the mirror motor to ensure it is functioning correctly. Replace the motor if it is faulty.
- Verify the connections in the circuit and clean any corrosion present.
- Clear the diagnostic trouble codes from the vehicle's system and test the mirror to ensure proper functionality.
Cost to Fix B1746
The cost of repairing a mirror passenger horizontal switch circuit open issue can vary depending on the specific cause of the problem and the labor rates in your area. Typically, replacing a mirror switch can cost between $50 to $150, while fixing wiring or a motor issue can range from $100 to $300. Labor costs can add an additional $80 to $150 per hour to the total repair bill. It's recommended to consult with a professional mechanic to get an accurate estimate based on your vehicle's make and model.
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Frequently Asked Questions about B1746 Code
1. What are the common symptoms of OBDII code B1746 (Mirror Passenger Horizontal Switch Circuit Open)?
Possible symptoms include non-functioning passenger side mirror adjustments and an illuminated dashboard warning light.
2. What are the potential causes of OBDII code B1746?
The code B1746 may be triggered by a faulty mirror switch, damaged wiring, poor electrical connections, or a malfunctioning mirror motor.
3. How can I diagnose the cause of OBDII code B1746?
To diagnose the issue, you can start by visually inspecting the mirror switch and wiring for any visible damage. Using a multimeter, you can test the continuity of the circuit to identify any open circuits.
4. Can I repair OBDII code B1746 myself?
If you are comfortable working with automotive wiring and electrical components, you may be able to repair the issue yourself by replacing the faulty mirror switch, repairing damaged wiring, or addressing poor connections.
5. Is it safe to continue driving with OBDII code B1746 unresolved?
While the vehicle is still safe to drive with this code, it's essential to address the issue promptly to ensure proper functionality of the passenger side mirror adjustment.
6. How much does it typically cost to repair OBDII code B1746 at a mechanic?
The cost of repairing OBDII code B1746 can vary depending on the specific cause of the issue, but it generally ranges from $100 to $300 at a mechanic, including parts and labor.
7. Can resetting the OBDII system clear code B1746?
Resetting the OBDII system may temporarily clear the code, but it will likely reappear if the underlying issue causing the circuit open is not resolved.
8. Are there any preventive measures to avoid OBDII code B1746 in the future?
Regularly inspecting the mirror switch, wiring, and connections for damage or wear can help prevent the recurrence of OBDII code B1746.
9. Will OBDII code B1746 affect the overall performance of the vehicle?
OBDII code B1746 specifically relates to the passenger side mirror switch circuit and should not affect the overall performance of the vehicle outside of mirror adjustment functionality.
10. How long does it typically take to repair OBDII code B1746?
The repair time for OBDII code B1746 can vary based on the specific cause and repair process but generally takes between 1 to 2 hours at a mechanic.
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