OBD Guide
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P1610

Lock Mode

P1610 is an OBD-II diagnostic trouble code meaning: Lock Mode. Common causes: attempted unauthorized access to the system, immobilizer malfunction. Estimated repair cost: $56–222.

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$56–222 (est.)

Symptoms

  • Engine won't start
  • Engine power limitation
  • Check Engine Light Is On
  • The car goes into emergency mode

Causes

  • Attempted unauthorized access to the system
  • Immobilizer malfunction
  • Problems with the ignition key
  • Engine ECU malfunction
  • Damage to security system wiring

How to Fix

  1. Check if the ignition key is working properly
  2. Immobilizer diagnostics
  3. Check the condition of the engine ECU
  4. Inspect the security system wiring
  5. Reset the error using an OBD-II scanner
  6. Repair only from an authorized dealer

Related codes

P1611P1612P1613

Error P1610 by Vehicle Brand

BuickCadillacChevroletGMGMCMercedes-BenzOldsmobileSaturn

FAQ

What does the P1610 code mean?

P1610 is an OBD-II diagnostic trouble code that indicates: Lock Mode

What causes a P1610 error code?

The most common causes of P1610 include: Attempted unauthorized access to the system; Immobilizer malfunction; Problems with the ignition key; Engine ECU malfunction.

How do I fix a P1610 diagnostic trouble code?

To fix P1610: Check if the ignition key is working properly. Immobilizer diagnostics. Check the condition of the engine ECU. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1610?

Do not drive — repair immediately

How much does it cost to fix P1610?

The estimated repair cost for P1610 is $56–222. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat