OBD Guide
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P1679

Immobilizer Environment Identification Failed

P1679 is an OBD-II diagnostic trouble code meaning: Immobilizer Environment Identification Failed. Common causes: immobilizer antenna malfunction, problems with the chip in the ignition key. Estimated repair cost: $56–167.

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$56–167 (est.)

Symptoms

  • Engine won't start
  • Engine stalls after starting
  • The immobilizer indicator is on
  • Check Engine light comes on
  • The car does not respond to the ignition key

Causes

  • Immobilizer antenna malfunction
  • Problems with the chip in the ignition key
  • Open or short circuit in wiring
  • Failure in the immobilizer control unit
  • Immobilizer system power supply problems

How to Fix

  1. Check the condition of the ignition key
  2. Diagnose the immobilizer antenna
  3. Check wiring integrity
  4. Scan immobilizer control unit
  5. Repair only from an authorized dealer

Related codes

P1678P1680P1681

Error P1679 by Vehicle Brand

Volkswagen

FAQ

What does the P1679 code mean?

P1679 is an OBD-II diagnostic trouble code that indicates: Immobilizer Environment Identification Failed

What causes a P1679 error code?

The most common causes of P1679 include: Immobilizer antenna malfunction; Problems with the chip in the ignition key; Open or short circuit in wiring; Failure in the immobilizer control unit.

How do I fix a P1679 diagnostic trouble code?

To fix P1679: Check the condition of the ignition key. Diagnose the immobilizer antenna. Check wiring integrity. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1679?

Do not drive — repair immediately

How much does it cost to fix P1679?

The estimated repair cost for P1679 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat