OBD Guide

B3119

Keyless Entry Antenna 1

B3119 is an OBD-II diagnostic trouble code meaning: Keyless Entry Antenna 1. Common causes: broken antenna wires, mechanical damage to the antenna. Estimated repair cost: $56–167.

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

Symptoms

  • Problems with remote start/door unlocking
  • Intermittent operation of the keyless to Jacobs accessory
  • The malfunction indicator on the instrument panel lights up

Causes

  • Broken antenna wires
  • Mechanical damage to the antenna
  • Control module malfunction
  • Short circuit in the antenna circuit
  • Wiring Harness Problems

How to Fix

  1. Check the integrity of the antenna wiring harness
  2. Diagnose antenna operation using an OBD-II scanner
  3. Replace the faulty antenna
  4. Check and, if necessary, replace the control module
  5. Clear error codes and check system operation

Related codes

Error B3119 by Vehicle Brand

FAQ

What does the B3119 code mean?

B3119 is an OBD-II diagnostic trouble code that indicates: Keyless Entry Antenna 1

What causes a B3119 error code?

The most common causes of B3119 include: Broken antenna wires; Mechanical damage to the antenna; Control module malfunction; Short circuit in the antenna circuit.

How do I fix a B3119 diagnostic trouble code?

To fix B3119: Check the integrity of the antenna wiring harness. Diagnose antenna operation using an OBD-II scanner. Replace the faulty antenna. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B3119?

Limited driving only, diagnose soon

How much does it cost to fix B3119?

The estimated repair cost for B3119 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat