AutoCodes – Lexus – C1AAC Lexus

C1AAC Lexus Code - Vehicle Information Unmatched

Quick Answer

When the Forward Recognition Camera is replaced with a new one, the new Forward Recognition Camera attempts to store the vehicle information received from the Engine Control Module (ECM). Common causes include Faulty Forward Recognition Camera, Forward Recognition Camera harness is open or shorted, Forward Recognition Camera circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: C1AAC Lexus indicates Vehicle Information Unmatched.
Common causes: Common causes include Faulty Forward Recognition Camera, Forward Recognition Camera harness is open or shorted, Forward Recognition Camera circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 917

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 11, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
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Code C1AAC Lexus Description

When the Forward Recognition Camera is replaced with a new one, the new Forward Recognition Camera attempts to store the vehicle information received from the Engine Control Module (ECM). If the vehicle information stored in the Forward Recognition Camera is different from that stored in the ECM, Diagnostic Trouble Code (DTC) C1AAC is stored.

OBDII Code C1AAC Lexus - Vehicle Information Unmatched - AutoCodes.com — C1AAC Lexus Code - Vehicle Information Unmatched

What does this mean?

What are the Possible Causes of the DTC C1AAC Lexus?

Faulty Forward Recognition Camera
Forward Recognition Camera harness is open or shorted
Forward Recognition Camera circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC C1AAC Lexus?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C1AAC Lexus code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.