OBD Guide
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P1696

Immobilizer Key Mismatched

P1696 is an OBD-II diagnostic trouble code meaning: Immobilizer Key Mismatched. Common causes: faulty or damaged chip key, problems with the immobilizer antenna around the ignition switch. Estimated repair cost: $33–167.

Severity
🔴 High
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$33–167 (est.)

Symptoms

  • Engine won't start
  • The engine stalls a few seconds after starting
  • The immobilizer indicator is flashing
  • A key error message appears on the dashboard

Causes

  • Faulty or damaged chip key
  • Problems with the immobilizer antenna around the ignition switch
  • Immobilizer module malfunction
  • Key programming failure
  • Problems with wiring between immobilizer and ECU

How to Fix

  1. Check the operation of the spare key
  2. Diagnose the immobilizer antenna
  3. Check the condition of the chip in the key
  4. Reprogram keys using dealer equipment
  5. Check the integrity of the immobilizer system wiring

Related codes

P1694P1695P1697

Error P1696 by Vehicle Brand

AcuraBuickCadillacChevroletChryslerDodgeGMGMCHondaInfinitiJaguarJeepMitsubishiPlymouthPontiacSaturn

FAQ

What does the P1696 code mean?

P1696 is an OBD-II diagnostic trouble code that indicates: Immobilizer Key Mismatched

What causes a P1696 error code?

The most common causes of P1696 include: Faulty or damaged chip key; Problems with the immobilizer antenna around the ignition switch; Immobilizer module malfunction; Key programming failure.

How do I fix a P1696 diagnostic trouble code?

To fix P1696: Check the operation of the spare key. Diagnose the immobilizer antenna. Check the condition of the chip in the key. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1696?

Yes, but get it checked soon

How much does it cost to fix P1696?

The estimated repair cost for P1696 is $33–167. Actual cost depends on your vehicle, location, and labor rates.

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