OBD Guide
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C1669

Incomplete Lock Release

C1669 is an OBD-II diagnostic trouble code meaning: Incomplete Lock Release. Common causes: malfunction of the lock release solenoid, wiring harness damage. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Problems unlocking doors
  • Central locking malfunction
  • The security system malfunction indicator lights up

Causes

  • Malfunction of the lock release solenoid
  • Wiring harness damage
  • Mechanical fault of the lock
  • Problems with the control unit

How to Fix

  1. Check wiring harness for damage
  2. Check the operation of the lock release solenoid
  3. Inspect the mechanical components of the lock
  4. Scan the control unit for additional errors

Related codes

B1669B1670

FAQ

What does the C1669 code mean?

C1669 is an OBD-II diagnostic trouble code that indicates: Incomplete Lock Release

What causes a C1669 error code?

The most common causes of C1669 include: Malfunction of the lock release solenoid; Wiring harness damage; Mechanical fault of the lock; Problems with the control unit.

How do I fix a C1669 diagnostic trouble code?

To fix C1669: Check wiring harness for damage. Check the operation of the lock release solenoid. Inspect the mechanical components of the lock. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C1669?

Limited driving only, diagnose soon

How much does it cost to fix C1669?

The estimated repair cost for C1669 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat