OBD Guide

P1685

Invalid SKIM Key

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
  • Check Engine Light Is On
  • The key is not recognized by the system

Causes

  • Faulty ignition key
  • Problems with the SKIM module
  • Wiring damage
  • Immobilizer software failure

How to Fix

  1. Check the ignition key for compatibility
  2. Diagnose the SKIM module
  3. Check wiring integrity
  4. Reprogram the key or immobilizer module
  5. Repair only from an authorized dealer

Related codes

Error P1685 by Vehicle Brand