OBD Guide
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P1611

Key ID Discord IMM-ECM

P1611 is an OBD-II diagnostic trouble code meaning: Key ID Discord IMM-ECM. Common causes: using the wrong ignition key, chip in the key is faulty. Estimated repair cost: $17–111.

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$17–111 (est.)

Symptoms

  • Engine won't start
  • The engine stalls immediately after starting
  • The immobilizer indicator is flashing
  • A message appears on the dashboard indicating that the key is faulty

Causes

  • Using the wrong ignition key
  • Chip in the key is faulty
  • Problems with the immobilizer antenna
  • Malfunctions in the engine control unit
  • Damage to the immobilizer system wiring harness

How to Fix

  1. Try using a different registered key
  2. Check the status of the chip in the ignition key
  3. Diagnostics of the immobilizer antenna
  4. Checking connections and system wiring harness
  5. Key reprogramming at an authorized dealer

Related codes

P1610P1612P1613

Error P1611 by Vehicle Brand

BMWBuickCadillacChevroletGMGMCJaguarKiaMercedes-BenzOldsmobileSaturnVolkswagen

FAQ

What does the P1611 code mean?

P1611 is an OBD-II diagnostic trouble code that indicates: Key ID Discord IMM-ECM

What causes a P1611 error code?

The most common causes of P1611 include: Using the wrong ignition key; Chip in the key is faulty; Problems with the immobilizer antenna; Malfunctions in the engine control unit.

How do I fix a P1611 diagnostic trouble code?

To fix P1611: Try using a different registered key. Check the status of the chip in the ignition key. Diagnostics of the immobilizer antenna. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1611?

Do not drive — repair immediately

How much does it cost to fix P1611?

The estimated repair cost for P1611 is $17–111. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat