B1746 Code - Mirror Passenger Horizontal Switch Circuit Open
Quick Answer
The Body Control Module (BCM) monitors the Mirror Passenger Horizontal Switch. Common causes include Faulty Mirror Passenger Horizontal Switch, Mirror Passenger Horizontal Switch harness is open or shorted, Mirror Passenger Horizontal Switch circuit poor electrical connection. 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 Passenger Horizontal Switch, Mirror Passenger Horizontal Switch harness is open or shorted, Mirror Passenger Horizontal Switch circuit poor electrical connection.
- 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.
Code B1746 Description
What are the Possible Causes of the DTC B1746?
- Faulty Mirror Passenger Horizontal Switch
- Mirror Passenger Horizontal Switch harness is open or shorted
- Mirror Passenger Horizontal Switch circuit poor electrical connection
- Faulty Body Control Module (BCM)
How to Fix the DTC B1746?
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 B1746 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 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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