OBD Guide
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C1AAA

FCM Destination Information Uninitialized

C1AAA is an OBD-II diagnostic trouble code meaning: FCM Destination Information Uninitialized. Common causes: fcm software failure, problems with the fcm wiring harness or connectors. Estimated repair cost: $56–167.

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

Symptoms

  • No collision warnings
  • Incorrect operation of the FCM system
  • Check Engine Light or Security Warning Is On

Causes

  • FCM software failure
  • Problems with the FCM wiring harness or connectors
  • FCM module malfunction
  • Failures in the car's electrical network

How to Fix

  1. Check the FCM wiring harness and connectors for damage or oxidation.
  2. Reset the error using a diagnostic scanner
  3. Update FCM software
  4. Replace FCM if necessary

Related codes

C1AABC1AACU0121

FAQ

What does the C1AAA code mean?

C1AAA is an OBD-II diagnostic trouble code that indicates: FCM Destination Information Uninitialized

What causes a C1AAA error code?

The most common causes of C1AAA include: FCM software failure; Problems with the FCM wiring harness or connectors; FCM module malfunction; Failures in the car's electrical network.

How do I fix a C1AAA diagnostic trouble code?

To fix C1AAA: Check the FCM wiring harness and connectors for damage or oxidation.. Reset the error using a diagnostic scanner. Update FCM software. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C1AAA?

Limited driving only, diagnose soon

How much does it cost to fix C1AAA?

The estimated repair cost for C1AAA is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat