What Does B2325 Mean?
This code indicates the Body Control Module (BCM) has detected an open circuit in the driver's side mirror vertical adjustment feedback potentiometer. The potentiometer provides position feedback to the BCM during mirror adjustment, and an open circuit means no signal is being received. This prevents the BCM from knowing the mirror's position and may disable vertical adjustment functionality.
Common Causes
45%
Open or damaged wiring between BCM and mirror potentiometer, including broken wires, corroded terminals, or damaged harness connectors
30%
Failed potentiometer internal to the mirror assembly due to wear, contamination, or internal break
15%
Corroded or loose connector at the mirror base or door jamb where flexing occurs
10%
Failed BCM unable to properly read potentiometer signal or provide reference voltage
Diagnostic Steps
1
Step 1: Perform visual inspection of driver mirror wiring harness from door jamb to mirror assembly, checking for obvious damage, pinched wires, broken insulation, or water intrusion. Pay special attention to flex points at door hinge area.
2
Step 2: Using a digital multimeter, backprobe the mirror connector (mirror side disconnected) and check for continuity between the potentiometer signal wire and BCM connector. Reading should be less than 5 ohms. Also check for shorts to ground or power (should be infinite resistance).
3
Step 3: With mirror connector attached, measure reference voltage from BCM to potentiometer (typically 5V). If no voltage present, trace power supply circuit back to BCM. If voltage present, measure potentiometer resistance while manually moving mirror vertically (should sweep smoothly between approximately 500-4500 ohms).
4
Step 4: If wiring and voltage checks pass but potentiometer shows infinite resistance or no change when moved, replace mirror assembly. If wiring shows open circuit, repair harness and secure properly. Clear codes and verify mirror vertical adjustment operates smoothly through full range while monitoring live data for position feedback.
Estimated Repair Cost
$100 - $450
Parts + labor, varies by vehicle and location
This code indicates the Body Control Module (BCM) has detected an open circuit in the driver's side mirror vertical adjustment feedback potentiometer. The potentiometer provides position feedback to the BCM during mirror adjustment, and an open circuit means no signal is being received. This prevent...
The most common cause of B2325 (Mirror Driver Vertical Feedback Potentiometer Circuit Open) is: Open or damaged wiring between BCM and mirror potentiometer, including broken wires, corroded terminals, or damaged harness connectors
Typical repair costs for B2325 range from $100 to $450, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Safe to continue driving as this only affects power mirror adjustment functionality. The mirror can still be positioned manually if needed, but proper blind spot visibility should be ensured before driving. Non-urgent repair.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to B2325 to identify the root cause.
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Quick Info
Category
Body
System
Body Control and Accessory Systems
Difficulty
Type
Generic (SAE)
Recommended Tools
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