AutoCodes – RAM – U0418 RAM

U0418 RAM 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 RAM 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 4,178

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 Apr 08, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U0418 RAM 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 RAM - Invalid Data Received From Brake System Control Module - AutoCodes.com — U0418 RAM Code - Invalid Data Received From Brake System Control Module

What does this mean?

What are the Possible Causes of the DTC U0418 RAM?

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 RAM?

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 RAM 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.

Frequently Asked Questions about U0418 RAM Code

1. What does OBDII code U0418 RAM mean?

- It indicates that the vehicle's onboard diagnostic system has detected invalid data received from the Brake System Control Module.

2. What are common symptoms of OBDII code U0418 RAM?

- Common symptoms include the ABS warning light illuminating on the dashboard, potential loss of communication with the brake system module, and possible issues with the vehicle's braking system.

3. What are the possible causes of OBDII code U0418 RAM?

- The code can be triggered by faulty wiring or connections between the control modules, a malfunctioning brake system control module, damaged sensors, or software issues.

4. How can I diagnose OBDII code U0418 RAM?

- Diagnosis typically involves using an OBDII scanner to retrieve the code, checking for any other related codes, inspecting the brake system control module and its connections, and conducting a thorough visual inspection of the components involved.

5. Can I still drive my vehicle with OBDII code U0418 RAM?

- It is not recommended to drive your vehicle with this code present, as it may indicate potential issues with the braking system that could compromise safety. It is advised to address the problem promptly.

6. How can I repair OBDII code U0418 RAM?

- Repair options include checking and repairing any damaged wiring or connections, replacing the brake system control module if necessary, addressing any sensor faults, and ensuring all software updates are current.

7. Can OBDII code U0418 RAM be triggered by a loose gas cap or other minor issues?

- No, this code specifically relates to communication errors with the brake system control module and is not typically associated with minor issues like a loose gas cap.

8. Is it possible to reset OBDII code U0418 RAM without addressing the underlying issue?

- While you may be able to clear the code temporarily, it is crucial to address the root cause to prevent the code from reappearing and potentially causing safety concerns.

9. Do I need specialized tools to repair OBDII code U0418 RAM?

- While some diagnostic steps may require specialized tools like an OBDII scanner, basic repairs such as checking connections and replacing components can often be done with common hand tools.

10. Should I seek professional help for OBDII code U0418 RAM, or can I fix it myself?

- Depending on your level of automotive knowledge and experience, you may be able to address the issue yourself by following diagnostic steps and repair procedures. However, if you are unsure or uncomfortable with the process, seeking professional help is recommended for accurate diagnosis and resolution.