AutoCodes – Chrysler – U11D2 Chrysler

U11D2 Chrysler Code - Lost Brake Signal

Quick Answer

This diagnostic checks the validity of the brake switch message which is sent by the Anti-lock Braking System (ABS) Module via Controller Area Network (CAN) network. Common causes include Faulty Powertrain Control Module (PCM), Faulty Anti-lock Braking System (ABS) Module, Faulty Transmission Control Module (TCM). 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: U11D2 Chrysler indicates Lost Brake Signal.
Common causes: Common causes include Faulty Powertrain Control Module (PCM), Faulty Anti-lock Braking System (ABS) Module, Faulty Transmission Control Module (TCM).
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 423

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 May 03, 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 U11D2 Chrysler Description

This diagnostic checks the validity of the brake switch message which is sent by the Anti-lock Braking System (ABS) Module via Controller Area Network (CAN) network. The diagnostic checks the validity by performing a CRC and message counter check to verify the brake switch message is continuously updated by the ABS module and it has a valid value. A signal toggle bit and a signal parity bit are sent by the ABS module within the CAN message. In order to be sure the message content is continuously updated, the value of the toggle bit changes from 0 to 1 and vice versa every two messages. In order to be sure the message content is valid, the parity bit value is set so that the sum of specific signal bits (PcmBrkSw) of the message content plus the toggle bit plus the parity bit is an even number. If the toggle bit value does not change or the signal parity is not verified for a calibrated amount of time then the Diagnostic Trouble Code (DTC) U11D2 is set.

OBDII Code U11D2 Chrysler - Lost Brake Signal - AutoCodes.com — U11D2 Chrysler Code - Lost Brake Signal

What does this mean?

What are the Possible Causes of the DTC U11D2 Chrysler?

Faulty Powertrain Control Module (PCM)
Faulty Anti-lock Braking System (ABS) Module
Faulty Transmission Control Module (TCM)

How to Fix the DTC U11D2 Chrysler?

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 U11D2 Chrysler 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 U11D2 Chrysler code?

Need more information on how to fix the U11D2 Chrysler code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U11D2 Chrysler 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 U11D2 Chrysler Code

1. What are the common symptoms of OBDII code U11D2 Chrysler (Lost Brake Signal)?

- Common symptoms include the brake warning light illuminating on the dashboard, loss of brake function, and potential issues with the ABS system.

2. What can cause the U11D2 Chrysler code to trigger?

- The code may be triggered by a faulty brake switch, damaged wiring or connectors related to the brake system, or issues with the ABS module.

3. How serious is the U11D2 Lost Brake Signal code in a Chrysler vehicle?

- This code is considered serious as it indicates a problem with the brake system, potentially affecting the vehicle's ability to brake properly and safely.

4. How can I diagnose the U11D2 code related to a lost brake signal in my Chrysler?

- Diagnosing the code involves checking the brake switch, inspecting the wiring and connectors for damage, and scanning the ABS module for any related faults.

5. Can I continue driving my Chrysler with the U11D2 code present?

- It is not recommended to drive the vehicle with the U11D2 code active, as it may lead to brake failure or other safety issues. It is advised to address the problem promptly.

6. How can I repair the U11D2 Lost Brake Signal code in my Chrysler?

- Repair may involve replacing the brake switch, repairing or replacing damaged wiring, or addressing any issues with the ABS module as necessary.

7. Will resetting the OBDII code U11D2 in my Chrysler resolve the issue?

- Simply resetting the code may temporarily clear the warning light, but it will not fix the underlying problem causing the lost brake signal issue.

8. Can a DIY enthusiast fix the U11D2 code in a Chrysler, or is professional help required?

- Depending on the cause of the code, some DIY enthusiasts may be able to address the issue by replacing the brake switch or repairing wiring. However, complex ABS module issues may require professional assistance.

9. How much can I expect to pay to repair the U11D2 Lost Brake Signal code in a Chrysler?

- The cost of repair can vary depending on the exact cause of the issue. Replacing a brake switch or repairing wiring may be relatively affordable, while addressing ABS module problems can be more costly.

10. Are there any preventive measures to avoid encountering the U11D2 code in my Chrysler?

- Regularly checking the brake system, maintaining proper brake fluid levels, and addressing any brake-related issues promptly can help prevent the occurrence of the U11D2 Lost Brake Signal code.