OBD Guide

B3105

Keyless Entry Transmitters

B3105 is an OBD-II diagnostic trouble code meaning: Keyless Entry Transmitters. Common causes: low key fob battery, damage to the transmitter. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Keyless entry does not work
  • The car does not respond to pressing the key fob buttons
  • Error indication on the dashboard

Causes

  • Low key fob battery
  • Damage to the transmitter
  • Antenna malfunction
  • Wiring Harness Problems
  • Control module malfunction

How to Fix

  1. Check and replace the key fob battery
  2. Check the transmitter for damage
  3. Check antenna and wiring harness
  4. Scan the control module for errors
  5. Replace the transmitter or control module if necessary

Related codes

Error B3105 by Vehicle Brand

FAQ

What does the B3105 code mean?

B3105 is an OBD-II diagnostic trouble code that indicates: Keyless Entry Transmitters

What causes a B3105 error code?

The most common causes of B3105 include: Low key fob battery; Damage to the transmitter; Antenna malfunction; Wiring Harness Problems.

How do I fix a B3105 diagnostic trouble code?

To fix B3105: Check and replace the key fob battery. Check the transmitter for damage. Check antenna and wiring harness. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B3105?

Limited driving only, diagnose soon

How much does it cost to fix B3105?

The estimated repair cost for B3105 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat