B2320
Low Severity (Level 1)Mirror Driver Horizontal Feedback Potentiometer Circuit Failure
B2320 usually means mirror Driver Horizontal Feedback Potentiometer Circuit Failure.
Can you still drive with B2320?
✅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
- Warning light or message on dashboard related to the power mirror system
- Power mirrors not functioning as expected
- Mirror defrost/heater not working
- Diagnostic trouble code (DTC) stored in module memory
Possible Causes
- Failed mirror motor — internal fault from age, heat cycling, and vibration
- Damaged wiring or corroded connector in the power mirror system circuit
- Blown fuse for the power mirror system circuit — check before replacing components
- Faulty control module driving the mirror motor
- Loose or corroded ground point shared by the power mirror system
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 ($2-118 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, $118 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 ($5-13 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 B2320 mean?
B2320 stands for "Mirror Driver Horizontal Feedback Potentiometer Circuit Failure". B2320 usually means mirror Driver Horizontal Feedback Potentiometer Circuit Failure.
Can you drive with B2320?
Safe to drive — this is an informational or minor issue. Schedule diagnosis at your convenience.
How much does it cost to fix B2320?
Repair costs for B2320 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 ($2-118 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, $118 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 B2320 clear itself?
Explore Repair Costs
Related OBD-II Codes
These codes are in the same range as B2320 and often share similar causes and fixes.
Worried about repair costs?
Get transparent estimates and verify your mechanic's quote before authorizing repairs.
Related Discussions
See what other car owners are saying about this code and related repairs.
View B2320 discussions in the community