B1734 Code - Mirror Driver Vertical Switch Circuit Open
Quick Answer
The B1734 diagnostic trouble code indicates that there is an issue with the mirror driver vertical switch circuit being open. Common causes include Faulty mirror control module, Damaged wiring in the mirror circuit, Loose or corroded electrical connections. 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
- B1734 indicates Mirror Driver Vertical Switch Circuit Open.
- Common causes
- Common causes include Faulty mirror control module, Damaged wiring in the mirror circuit, Loose or corroded electrical connections.
- 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 B1734 Description
The B1734 diagnostic trouble code indicates that there is an issue with the mirror driver vertical switch circuit being open. In simpler terms, this means that there is a problem with the circuit that controls the vertical movement of the driver's side mirror. The driver's side mirror is an essential component for ensuring safe driving, as it allows the driver to see vehicles and obstacles in their blind spot. When this circuit is open, it can prevent the driver from adjusting the mirror properly, potentially leading to reduced visibility and safety hazards on the road.
Common Causes of B1734
- Faulty mirror control module.
- Damaged wiring in the mirror circuit.
- Loose or corroded electrical connections.
- Water damage to the mirror control unit.
- Physical damage to the mirror assembly.
Symptoms of B1734
- Inability to adjust the driver's side mirror vertically.
- The mirror moves erratically or only in one direction.
- Mirror control buttons may not respond when pressed.
- Dashboard warning light related to the mirror system may illuminate.
- Strange noises coming from the mirror when attempting to adjust it.
How to Fix B1734
- Begin by inspecting the mirror control module and wiring for any visible damage or signs of corrosion.
- Test the vertical switch in the mirror control module to determine if it is functioning correctly.
- Check the electrical connections for tightness and corrosion, cleaning or tightening them as needed.
- Replace the mirror control module if it is determined to be faulty.
- Test the mirror's vertical adjustment functionality after completing the repair to ensure proper operation.
Cost to Fix B1734
The cost of repairing a mirror driver vertical switch circuit open issue can vary depending on the extent of the damage and the specific components that need to be replaced. In general, the repair costs for this issue can range from $100 to $300, including parts and labor. However, it is important to note that labor rates can vary between different auto repair shops, with hourly rates typically ranging from $80 to $150. Additionally, the cost of parts such as the mirror control module will also contribute to the overall repair expenses. For a more accurate cost estimate, it is recommended to consult with a qualified mechanic or auto repair shop in your area.
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