OBD Guide
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P1260

Theft Detected Vehicle Immobilized

P1260 is an OBD-II diagnostic trouble code meaning: Theft Detected Vehicle Immobilized. Common causes: faulty or unrecognized ignition key, damage to the immobilizer antenna. Estimated repair cost: $6–167.

Severity
🔴 High
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$6–167 (est.)

Symptoms

  • Engine won't start
  • The immobilizer indicator is flashing
  • Alarm goes off for no reason
  • The ignition turns on, but the starter does not engage

Causes

  • Faulty or unrecognized ignition key
  • Damage to the immobilizer antenna
  • Problems with the immobilizer ECU
  • Broken wiring in the anti-theft system
  • Key and immobilizer synchronization failure

How to Fix

  1. Check the battery in the ignition key
  2. Diagnose the immobilizer antenna
  3. Check the integrity of the system wiring
  4. Reprogram immobilizer keys
  5. Contact service to reset the system

Related codes

P1261P1262

Error P1260 by Vehicle Brand

BuickCadillacChevroletChryslerFordGMGMCJaguarLincolnMazdaMercuryOldsmobileSaturn

FAQ

What does the P1260 code mean?

P1260 is an OBD-II diagnostic trouble code that indicates: Theft Detected Vehicle Immobilized

What causes a P1260 error code?

The most common causes of P1260 include: Faulty or unrecognized ignition key; Damage to the immobilizer antenna; Problems with the immobilizer ECU; Broken wiring in the anti-theft system.

How do I fix a P1260 diagnostic trouble code?

To fix P1260: Check the battery in the ignition key. Diagnose the immobilizer antenna. Check the integrity of the system wiring. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1260?

Yes, but get it checked soon

How much does it cost to fix P1260?

The estimated repair cost for P1260 is $6–167. Actual cost depends on your vehicle, location, and labor rates.

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