B2325

Mirror Driver Vertical Feedback Potentiometer Circuit Open

Body Chassis/Safety Mirror Control 🟢 Low — Fix at next service ✅ Safe to Drive
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What This Actually Means

In plain language — no jargon

The side mirror's vertical position sensor is broken or disconnected, so the car can't tell where the mirror is pointing. It's like a volume knob with a broken dial—the stereo won't know if you've turned it up or down.

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Symptoms You May Notice

3 known symptoms for this code
Mirror won't move up/down or moves erratically
Mirror stuck in one vertical position
Warning light on dashboard
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How Your ECU Detects This

Technical sensor logic and voltage thresholds

The ECU monitors voltage from the potentiometer that tracks mirror vertical position. When you command the mirror to move, it expects a smooth voltage sweep from the sensor. An open circuit means zero or no signal at all, triggering the fault.

Voltage & Parameter Thresholds

ParameterNormal RangeFault Condition
Potentiometer voltage 0.5V to 4.5V (varies with position) No signal or constant 0V/5V
Circuit continuity Resistance within spec range Open circuit (infinite resistance)
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Diagnostic & DIY Fix Guide

Check these in order — from cheapest to most complex
1
Mirror electrical connector
Inspect and reseat the connector on the mirror motor assembly; clean corrosion if present.
2
Wiring harness to mirror
Check for breaks, pinches, or exposed wires between the door and mirror; repair or replace damaged sections.
3
Mirror motor assembly
Replace the entire mirror motor/potentiometer unit if wiring checks out and fault persists.
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When to See a Professional Mechanic

Not all fault codes are safe to DIY

Code B2325 is a low-severity fault. Your vehicle is generally safe to drive to a workshop for diagnosis. However, do not ignore it indefinitely — low-severity codes often indicate developing problems that become expensive if neglected. Book a diagnostic appointment within 2–4 weeks. If you notice any additional symptoms (rough running, power loss, unusual smells), treat it as higher priority.

Safety note: OBD-II codes identify the system or circuit where a fault was detected — they do not always identify the exact failed component. A professional mechanic using live sensor data will diagnose the root cause more accurately than replacing parts based on the code alone.
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How to Clear Code B2325

What happens after you fix the fault

Once the fault is repaired, B2325 can be cleared using any OBD-II scanner. Connect the scanner, navigate to "Clear Codes" or "Erase DTCs," and confirm. The check engine light turns off immediately.

The code will return if the root cause was not actually fixed. The ECM re-detects the fault within 1–3 drive cycles and sets the code again.

✅ Safe to Clear When
  • Fault has been diagnosed and repaired
  • You want to confirm the repair worked
  • Code appeared after a sensor was cleaned
⚠️ Do Not Clear When
  • Preparing for an emissions/PUC test
  • Root cause is still undiagnosed
  • Check engine light is flashing
Emissions test note: Clearing codes resets OBD readiness monitors. Most vehicles need 50–100 km of mixed driving before monitors complete. Do not clear codes immediately before an emissions or PUC inspection.