OBD Guide
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B2346

Mirror Switch Reference Voltage Positive Common Open Circuit

B2346 is an OBD-II diagnostic trouble code meaning: Mirror Switch Reference Voltage Positive Common Open Circuit. Common causes: broken common wire in the wiring harness, corrosion of mirror switch contacts. Estimated repair cost: $11–56.

Severity
⚠️ Medium
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$11–56 (est.)

Symptoms

  • Fixed mirrors
  • Mirrors do not respond to switch
  • The fault indicator lights up (if equipped)

Causes

  • Broken common wire in the wiring harness
  • Corrosion of mirror switch contacts
  • Mirror switch malfunction
  • Damage to the wiring harness (mechanical, thermal)

How to Fix

  1. Check the wiring harness for breaks or damage
  2. Inspect the mirror switch contacts for corrosion or oxidation.
  3. Measure the voltage at the mirror switch
  4. If necessary, replace the mirror switch
  5. Repair or replace damaged wiring harness

Related codes

B2345B2347

FAQ

What does the B2346 code mean?

B2346 is an OBD-II diagnostic trouble code that indicates: Mirror Switch Reference Voltage Positive Common Open Circuit

What causes a B2346 error code?

The most common causes of B2346 include: Broken common wire in the wiring harness; Corrosion of mirror switch contacts; Mirror switch malfunction; Damage to the wiring harness (mechanical, thermal).

How do I fix a B2346 diagnostic trouble code?

To fix B2346: Check the wiring harness for breaks or damage. Inspect the mirror switch contacts for corrosion or oxidation.. Measure the voltage at the mirror switch. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B2346?

Do not drive — repair immediately

How much does it cost to fix B2346?

The estimated repair cost for B2346 is $11–56. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat