AutoCodes – Generic – U0418

U0418 Code - Invalid Data Received From Brake System Control Module

Quick Answer

A Controller Area Network (CAN) is a vehicle bus standard designed to interconnect automotive devices without a host computer. Common causes include Faulty Brake System Control Module, Brake System Control Module harness is open or shorted, Brake System Control Module 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: U0418 indicates Invalid Data Received From Brake System Control Module.
Common causes: Common causes include Faulty Brake System Control Module, Brake System Control Module harness is open or shorted, Brake System Control Module 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 49,250

How popular is this code, among other codes? Medium

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 Apr 08, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code U0418 Description

A Controller Area Network (CAN) is a vehicle bus standard designed to interconnect automotive devices without a host computer. Operating information and commands are exchanged among the devices. The devices have programmed information about what messages are needed to be exchanged on the serial data circuits. Some devices are constantly receiving information from other devices through serial data communication network. The invalid data Diagnostic Trouble Code (DTC) will be set when a receiving device detects a discrepancy in the information it receives from the Brake System Control Module causing its integrity to be questioned.

OBDII Code U0418 - Invalid Data Received From Brake System Control Module - AutoCodes.com — U0418 Code - Invalid Data Received From Brake System Control Module

What does this mean?

What are the Possible Causes of the DTC U0418?

Faulty Brake System Control Module
Brake System Control Module harness is open or shorted
Brake System Control Module circuit poor electrical connection

How to Fix the DTC U0418?

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 U0418 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 U0418 code?

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Need Help with the Code?

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Information for Specific Makes

U0418 Buick — Invalid Data Received From Brake System Control Module
U0418 Cadillac — Invalid Data Received From Brake System Control Module
U0418 Chevrolet — Invalid Data Received From Brake System Control Module
U0418 Chrysler — Invalid Data Received From Brake System Control Module
U0418 Dodge — Invalid Data Received From Brake System Control Module
U0418 Ford — Invalid Data Received From Brake System Control Module
U0418 GMC — Invalid Data Received From Brake System Control Module
U0418 Jeep — Invalid Data Received From Brake System Control Module
U0418 Lincoln — Invalid Data Received From Brake System Control Module
U0418 Mercury — Invalid Data Received From Brake System Control Module
U0418 RAM — Invalid Data Received From Brake System Control Module

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.