B2347
Low Severity (Level 1)Mirror Switch Reference Voltage Positive Common Supply Low Voltage
B2347 usually means mirror Switch Reference Voltage Positive Common Supply Low Voltage.
Can you still drive with B2347?
✅Safe to drive — this is an informational or minor issue. Schedule diagnosis at your convenience.
Typical repair cost: $50 – $400
Severity Level 1 — Low
This code indicates a minor issue that is unlikely to cause immediate driveability problems. You can typically continue driving but should have the vehicle inspected at your earliest convenience.
Common Symptoms
- Power mirrors won't adjust — stuck in current position
- Mirror defrost/heater not working
- Diagnostic trouble code (DTC) stored in module memory
- Fault may be intermittent — code may clear itself and reappear
- Reduced vehicle functionality related to the power mirror system
Possible Causes
- Faulty mirror motor — most common cause, test before replacing
- Damaged or corroded wiring/connector in the power mirror system circuit
- Blown fuse or faulty relay for the power mirror system
- Poor ground connection — check and clean all related ground points
- Control module fault — rare but possible, only consider after ruling out simpler causes
Common Fixes
- Scan vehicle with a professional-grade OBD2 scanner to read all stored codes and freeze frame data — note the conditions when the code set ($13-147 at shop, free at auto parts store for basic scan)
- Visually inspect the power mirror system wiring harness and connectors — look for chafed wires, melted insulation, green corrosion, loose pins, or rodent damage (often free to check yourself, $58 diagnostic fee at shop)
- Inspect the wiring boot where it passes from the body into the door — this is the #1 failure point. Peel back the rubber boot and check for broken/cracked wires ($0 DIY inspection)
- Replace mirror motor if testing confirms it has failed — use OEM quality, avoid the cheapest no-name aftermarket parts that fail in a year ($50-400)
- Check and replace any blown fuses in the power mirror system fuse circuit — if fuse blows again, there's still a short that needs to be found ($3-12 for fuses)
Estimated Repair Cost
These are estimated costs based on generic repair data. Actual costs may vary depending on your vehicle, location, and labor rates.
Frequently Asked Questions
What does B2347 mean?
B2347 stands for "Mirror Switch Reference Voltage Positive Common Supply Low Voltage". B2347 usually means mirror Switch Reference Voltage Positive Common Supply Low Voltage.
Can you drive with B2347?
Safe to drive — this is an informational or minor issue. Schedule diagnosis at your convenience.
How much does it cost to fix B2347?
Repair costs for B2347 typically range from $50 to $400, depending on your vehicle make, model, and local labor rates. Common fixes include: Scan vehicle with a professional-grade OBD2 scanner to read all stored codes and freeze frame data — note the conditions when the code set ($13-147 at shop, free at auto parts store for basic scan); Visually inspect the power mirror system wiring harness and connectors — look for chafed wires, melted insulation, green corrosion, loose pins, or rodent damage (often free to check yourself, $58 diagnostic fee at shop); Inspect the wiring boot where it passes from the body into the door — this is the #1 failure point. Peel back the rubber boot and check for broken/cracked wires ($0 DIY inspection).
Will B2347 clear itself?
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