B2347 Code - Mirror Switch Reference Voltage Positive Common Supply Low Voltage
Quick Answer
The Body Control Module (BCM) monitors the Mirror Switch. Common causes include Faulty Mirror Switch, Mirror Switch harness is open or shorted, Mirror 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
- B2347 indicates Mirror Switch Reference Voltage Positive Common Supply Low Voltage.
- Common causes
- Common causes include Faulty Mirror Switch, Mirror Switch harness is open or shorted, Mirror 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 B2347 Description
What are the Possible Causes of the DTC B2347?
- Faulty Mirror Switch
- Mirror Switch harness is open or shorted
- Mirror Switch circuit poor electrical connection
- Faulty Body Control Module (BCM)
How to Fix the DTC B2347?
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 B2347 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 B2347 Code
1. What does the OBDII code B2347 mean?
B2347 indicates that the mirror switch's reference voltage positive common supply is lower than expected, affecting the operation of the power mirror system.
2. What are the common symptoms of the B2347 code?
Symptoms may include unresponsive or malfunctioning power mirrors, intermittent mirror adjustments, or no response from the mirror switch.
3. What causes the B2347 code to appear?
The code can be caused by a faulty mirror switch, damaged wiring or connectors, a blown fuse, or a failure in the mirror control module.
4. How can I diagnose the B2347 code?
Check the wiring and connectors related to the mirror switch for damage or corrosion, test the mirror switch for proper function, and verify the reference voltage with a multimeter.
5. Can I still drive my car with the B2347 code?
Yes, the vehicle is still drivable, but you may lose the ability to adjust your mirrors, which can impact visibility and safety.
6. How do I fix the B2347 code?
Repairs may involve replacing the mirror switch, repairing damaged wiring or connectors, or replacing a faulty mirror control module.
7. What tools are needed to fix the B2347 code?
You’ll need a multimeter to check voltage, a basic set of hand tools, and possibly an OBDII scanner to clear the code after repairs.
8. How much does it cost to fix the B2347 code?
Costs can vary depending on the repair, but replacing a mirror switch typically costs $50-$200, while wiring repairs may cost less if done yourself.
9. Can the B2347 code clear itself?
No, the code typically won't clear itself. It must be addressed and cleared using an OBDII scanner after repairs are performed.
10. Is the B2347 code common across all vehicles?
No, it’s specific to certain vehicles with advanced mirror control systems, so it may not apply to older or less-equipped models.
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