OBD Guide
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P1614

Chain of IMMU-KEY

P1614 is an OBD-II diagnostic trouble code meaning: Chain of IMMU-KEY. Common causes: malfunction of the ignition key (chip), damage to the immobilizer circuit. Estimated repair cost: $56–167.

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

Symptoms

  • Engine won't start
  • The immobilizer indicator is flashing
  • The system does not recognize the key
  • Periodic malfunctions of the immobilizer

Causes

  • Malfunction of the ignition key (chip)
  • Damage to the immobilizer circuit
  • Problems with the immobilizer antenna
  • Malfunctions in the immobilizer module (IMMU)
  • Wiring Harness Problems

How to Fix

  1. Check the condition of the ignition key (chip)
  2. Diagnose the immobilizer circuit for opens and shorts
  3. Check immobilizer antenna
  4. Test the IMMU module
  5. Repair only from an authorized dealer

Related codes

P1613P1615

Error P1614 by Vehicle Brand

BuickCadillacChevroletGMGMCKiaMercedes-BenzOldsmobileSaturnVolkswagen

FAQ

What does the P1614 code mean?

P1614 is an OBD-II diagnostic trouble code that indicates: Chain of IMMU-KEY

What causes a P1614 error code?

The most common causes of P1614 include: Malfunction of the ignition key (chip); Damage to the immobilizer circuit; Problems with the immobilizer antenna; Malfunctions in the immobilizer module (IMMU).

How do I fix a P1614 diagnostic trouble code?

To fix P1614: Check the condition of the ignition key (chip). Diagnose the immobilizer circuit for opens and shorts. Check immobilizer antenna. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1614?

Yes, but get it checked soon

How much does it cost to fix P1614?

The estimated repair cost for P1614 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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