AutoCodes – Lexus – C120A Lexus

C120A Lexus Code - ECU Initial Setting Incomplete

Quick Answer

When the Master Cylinder Solenoid (Skid Control ECU) is replaced, the Master Cylinder Solenoid (Skid Control ECU) must be informed that the vehicle is equipped with downhill assist control and/or crawl control. Common causes include Calibrate Master Cylinder Solenoid (Skid Control ECU). 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: C120A Lexus indicates ECU Initial Setting Incomplete.
Common causes: Common causes include Calibrate Master Cylinder Solenoid (Skid Control ECU).
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 13,567

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 Aug 22, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C120A Lexus Description

OBDII Code C120A Lexus - ECU Initial Setting Incomplete - AutoCodes.com — C120A Lexus Code - ECU Initial Setting Incomplete

What does this mean?

What are the Possible Causes of the DTC C120A Lexus?

Calibrate Master Cylinder Solenoid (Skid Control ECU)

How to Fix the DTC C120A 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 C120A 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.

Need more information about the C120A Lexus code?

Need more information on how to fix the C120A Lexus code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C120A Lexus code diagnosed by a professional: Find a repair shop in your area

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.

Frequently Asked Questions about C120A Lexus Code

1. What are the common symptoms of OBDII code C120A in a Lexus?

- Common symptoms include the Check Engine Light illuminating on the dashboard, reduced engine performance, and potential issues with the vehicle's stability control system.

2. What does the OBDII code C120A in a Lexus indicate?

- The code C120A indicates that the Electronic Control Unit (ECU) initial setting is incomplete, potentially leading to malfunctions in the vehicle's stability control system.

3. What are the possible causes of the ECU Initial Setting Incomplete code in a Lexus?

- Possible causes include a faulty ECU, improper software update or reprogramming, electrical issues, or a disrupted connection between the ECU and the vehicle's components.

4. How can I diagnose the ECU Initial Setting Incomplete code in my Lexus?

- Diagnosing this code typically involves using an OBDII scanner to retrieve the specific fault codes, checking the vehicle's stability control system for any related issues, and inspecting the ECU connections for any faults.

5. Is it safe to continue driving my Lexus with the ECU Initial Setting Incomplete code?

- It is recommended to avoid driving the vehicle if you are experiencing stability control issues, as this can impact the handling and safety of the vehicle. It is advisable to address the issue promptly.

6. Can I reset the ECU to clear the C120A code in my Lexus?

- While resetting the ECU may temporarily clear the code, it is important to address the underlying issue causing the code to prevent it from reoccurring.

7. How can I repair the ECU Initial Setting Incomplete code in my Lexus?

- Repairs may involve reprogramming or updating the ECU software, checking and repairing any faulty connections, or replacing the ECU if necessary.

8. Should I take my Lexus to a professional mechanic for the ECU Initial Setting Incomplete code?

- It is recommended to seek assistance from a qualified mechanic or dealership with experience in diagnosing and repairing ECU issues to ensure proper resolution of the code.

9. Can a DIY enthusiast fix the ECU Initial Setting Incomplete code in a Lexus?

- While some basic troubleshooting steps can be performed by a knowledgeable DIY enthusiast, dealing with ECU issues often requires specialized tools and expertise, making professional assistance advisable.

10. How much does it typically cost to repair the ECU Initial Setting Incomplete code in a Lexus?

- The cost of repairing the ECU Initial Setting Incomplete code can vary depending on the specific underlying issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.