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Mirror Passenger Horizontal Feedback Potentiometer Circuit Short to Battery

Jump to the fix

Severity

Medium

Can I keep driving?

Usually drivable, but get it diagnosed without delay.

First step

Read the codes and check the mirror position value in live data; a reading pinned at maximum points to a short to power.

  • BBody
  • 2Manufacturer-specific
  • 3Body
  • 14Sequence number

What does it mean?

B2314 is a Body (airbags, seat belts, body electronics) fault code. It indicates: Wiper ON/OFF Control Circuit High .

Symptoms

  • The passenger mirror runs to one extreme and stops, or refuses to move at all in that axis.
  • Memory recall no longer positions the passenger mirror correctly.
  • The mirror may move by itself when the door is opened or when other door functions are used.
  • Reverse tilt and memory storing are disabled for that mirror.
  • Other door functions on the same connector behave erratically at the same time.

Likely causes

  • Chafed wiring inside the door where the feedback wire has rubbed through against a permanently live circuit, often near the window regulator or the speaker frame.
  • Water in the mirror housing or the door connector bridging the signal pin to the motor supply pin.
  • Bent, spread or pushed back terminal in the mirror connector touching a powered contact.
  • Internal short inside the potentiometer or the mirror actuator between the wiper track and the motor feed.
  • Wiring damaged during door trim, glass or lock work and then trapped against a bracket.
  • Aftermarket accessory wiring such as courtesy lamps or speakers spliced into the door loom.
  • Door module internal fault on that input.

How to fix it

  1. Read the codes and check the mirror position value in live data; a reading pinned at maximum points to a short to power.
  2. Unplug the mirror connector and measure the feedback wire from the harness side with the key on; battery voltage present confirms the short is in the wiring.
  3. If the voltage disappears with the mirror unplugged, the short is inside the mirror actuator or its potentiometer.
  4. Inspect the door harness, especially near the window regulator, lock and speaker, for chafing, crushing and non factory splices.
  5. Check the mirror housing and connector for water, corrosion and damaged seals, and dry the connector before retesting.
  6. Repair the damaged wiring with sealed crimped joints and reroute the loom away from moving parts and sharp edges.
  7. Replace the mirror actuator when it is proven at fault, then reprogram the mirror memory positions.

Codes From the Same System

All Fault Codes

Related Similar Codes

This information follows the generic OBD-II definition and does not replace a vehicle-specific diagnosis. The severity rating is rule-based; an authorised diagnostic reading is required for a definitive answer.