OBD Guide
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P1570

Engine control Module Locked

P1570 is an OBD-II diagnostic trouble code meaning: Engine control Module Locked. Common causes: immobilizer malfunction, problems with ecu wiring or connectors. Estimated repair cost: $56–278.

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$56–278 (est.)

Symptoms

  • Engine won't start
  • The immobilizer indicator is on
  • Engine stalls after starting
  • Engine power limitation
  • The security light on the dashboard is flashing

Causes

  • Immobilizer malfunction
  • Problems with ECU wiring or connectors
  • ECU software failure
  • Damage to the chip in the ignition key
  • Security module malfunction

How to Fix

  1. Check the condition of the immobilizer and its components
  2. Diagnose ECU wiring and connectors
  3. Reflash or replace the ECU
  4. Check the ignition key and its chip
  5. Repair only from an authorized dealer

Related codes

P1560P1565P1568

Error P1570 by Vehicle Brand

BuickCadillacChevroletChryslerGMGMCMazdaOldsmobileSaturnVolkswagen

FAQ

What does the P1570 code mean?

P1570 is an OBD-II diagnostic trouble code that indicates: Engine control Module Locked

What causes a P1570 error code?

The most common causes of P1570 include: Immobilizer malfunction; Problems with ECU wiring or connectors; ECU software failure; Damage to the chip in the ignition key.

How do I fix a P1570 diagnostic trouble code?

To fix P1570: Check the condition of the immobilizer and its components. Diagnose ECU wiring and connectors. Reflash or replace the ECU. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1570?

Do not drive — repair immediately

How much does it cost to fix P1570?

The estimated repair cost for P1570 is $56–278. Actual cost depends on your vehicle, location, and labor rates.

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