AutoCodes – Lexus – C15C3 Lexus

C15C3 Lexus Code - Brake System Control Module Malfunction

Quick Answer

The Steering Control ECU detects a vehicle speed error by receiving an error signal from the skid control ECU via CAN communication. Common causes include Faulty Vehicle Stability Control System, Faulty Steering 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: C15C3 Lexus indicates Brake System Control Module Malfunction.
Common causes: Common causes include Faulty Vehicle Stability Control System, Faulty Steering 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 2,764

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 Nov 06, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code C15C3 Lexus Description

The Steering Control ECU detects a vehicle speed error by receiving an error signal from the skid control ECU via CAN communication. If the Steering Control ECU detects this error signal, it will turn the master warning light on, store this DTC, and stop Variable Gear Ratio Steering (VGRS) operation.

OBDII Code C15C3 Lexus - Brake System Control Module Malfunction - AutoCodes.com — C15C3 Lexus Code - Brake System Control Module Malfunction

What does this mean?

What are the Possible Causes of the DTC C15C3 Lexus?

Faulty Vehicle Stability Control System
Faulty Steering Control ECU

How to Fix the DTC C15C3 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 C15C3 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 C15C3 Lexus code?

Need more information on how to fix the C15C3 Lexus code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C15C3 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 C15C3 Lexus Code

1. What does OBDII code C15C3 mean on a Lexus?

Code C15C3 indicates a malfunction in the Brake System Control Module, which can affect the vehicle's braking performance or stability systems.

2. What are the common symptoms of code C15C3 in a Lexus?

Symptoms may include the ABS warning light or brake warning light turning on, reduced braking performance, or unresponsive stability control features.

3. What causes the C15C3 code to appear in a Lexus?

Common causes include a faulty Brake System Control Module, damaged wiring or connectors, software issues, or communication errors between the module and other systems.

4. Can I drive my Lexus with code C15C3 active?

It is not recommended to drive with this code active, as it may affect critical braking and safety functions, increasing the risk of an accident.

5. How can I diagnose code C15C3 on my Lexus?

Diagnosis involves scanning for codes with an OBDII scanner, inspecting the Brake System Control Module wiring and connectors, and testing the module for proper functionality.

6. What repairs are needed to fix code C15C3 on a Lexus?

Repairs may include replacing the Brake System Control Module, repairing or replacing damaged wiring, or updating the module's software if applicable.

7. How much does it cost to fix code C15C3 on a Lexus?

Repair costs can vary but typically range from $500 to $1,500, depending on whether the module needs replacement and labor charges.

8. Can a dead battery cause code C15C3 in a Lexus?

Yes, a weak or dead battery can cause communication issues or power interruptions that may trigger this code.

9. Is it possible to reset code C15C3 without repairs?

Clearing the code with an OBDII scanner may temporarily reset it, but it will likely return if the underlying issue is not resolved.

10. Do I need to visit a dealership to fix code C15C3 on my Lexus?

While independent mechanics can often handle this repair, a dealership may be better equipped to update software or replace the module with OEM parts.