OBD Guide
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B2805

No transmitters Programmed

B2805 is an OBD-II diagnostic trouble code meaning: No transmitters Programmed. Common causes: keys or transmitters not programmed, failure in the immobilizer module. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Keyless entry does not work
  • The car won't start
  • The immobilizer indicator is on

Causes

  • Keys or transmitters not programmed
  • Failure in the immobilizer module
  • Dead battery in the key
  • Problems with the wiring harness associated with the access system

How to Fix

  1. Check and replace the battery in the key
  2. Program keys or transmitters using dealer equipment
  3. Check connections and integrity of wiring harness
  4. Diagnose the immobilizer module for faults

Related codes

B2806B2807P0513

FAQ

What does the B2805 code mean?

B2805 is an OBD-II diagnostic trouble code that indicates: No transmitters Programmed

What causes a B2805 error code?

The most common causes of B2805 include: Keys or transmitters not programmed; Failure in the immobilizer module; Dead battery in the key; Problems with the wiring harness associated with the access system.

How do I fix a B2805 diagnostic trouble code?

To fix B2805: Check and replace the battery in the key. Program keys or transmitters using dealer equipment. Check connections and integrity of wiring harness. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B2805?

Yes, but get it checked soon

How much does it cost to fix B2805?

The estimated repair cost for B2805 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat