OBD Guide
ENFRDEESPT

P161A

Incorrect Response from Immobilizer Control Module

P161A is an OBD-II diagnostic trouble code meaning: Incorrect Response from Immobilizer Control Module. Common causes: immobilizer module malfunction, damage to wiring or connectors. Estimated repair cost: $22–167.

Severity
🔴 High
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$22–167 (est.)

Symptoms

  • Engine won't start
  • The engine stalls immediately after starting
  • The immobilizer indicator is on
  • Check Engine Light Is On
  • Problems with key recognition

Causes

  • Immobilizer module malfunction
  • Damage to wiring or connectors
  • Faulty ignition key
  • Problems with the immobilizer antenna
  • ECU software failure

How to Fix

  1. Check the condition of the ignition key
  2. Check the integrity of wiring and connectors
  3. Check immobilizer antenna
  4. Diagnose the immobilizer module
  5. Reprogram the immobilizer system

Related codes

P1610P1611P1612

FAQ

What does the P161A code mean?

P161A is an OBD-II diagnostic trouble code that indicates: Incorrect Response from Immobilizer Control Module

What causes a P161A error code?

The most common causes of P161A include: Immobilizer module malfunction; Damage to wiring or connectors; Faulty ignition key; Problems with the immobilizer antenna.

How do I fix a P161A diagnostic trouble code?

To fix P161A: Check the condition of the ignition key. Check the integrity of wiring and connectors. Check immobilizer antenna. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P161A?

Yes, but get it checked soon

How much does it cost to fix P161A?

The estimated repair cost for P161A is $22–167. Actual cost depends on your vehicle, location, and labor rates.

FRDEESPT

See also: Russian version · NationStat