AutoCodes – Chrysler – U11D4 Chrysler

U11D4 Chrysler Code - Lost Pedal Position Message

Quick Answer

This diagnostic checks the validity and availability of the gas pedal position signal which is sent by the Powertrain Control Module (PCM) via a CAN message. Common causes include Faulty Powertrain Control Module (PCM), 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: U11D4 Chrysler indicates Lost Pedal Position Message.
Common causes: Common causes include Faulty Powertrain Control Module (PCM), 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 679

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 U11D4 Chrysler Description

This diagnostic checks the validity and availability of the gas pedal position signal which is sent by the Powertrain Control Module (PCM) via a CAN message. The diagnostic checks the validity by performing a CRC and message counter check to verify the gas pedal position signal is continuously updated by the PCM and that it has a valid value. The diagnostic also checks the availability by checking the received valid bit. A signal toggle bit and a signal parity bit are sent by the PCM within the CAN message. In order to be sure the message 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 is valid, the parity bit value is set so that the sum of specific signals bits (the PDL_POS) 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) U11D4 is set or when the signal is not available, the PCM sends a SNA default value to the TCM. If the TCM reads this value then DTC U11D4 is set.

OBDII Code U11D4 Chrysler - Lost Pedal Position Message - AutoCodes.com — U11D4 Chrysler Code - Lost Pedal Position Message

What does this mean?

What are the Possible Causes of the DTC U11D4 Chrysler?

Faulty Powertrain Control Module (PCM)
Faulty Transmission Control Module (TCM)

How to Fix the DTC U11D4 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 U11D4 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 U11D4 Chrysler code?

Need more information on how to fix the U11D4 Chrysler code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U11D4 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 U11D4 Chrysler Code

1. What are the common symptoms of OBDII code U11D4 Chrysler (Lost Pedal Position Message)?

The common symptoms include the check engine light coming on, reduced engine power, and potential difficulty accelerating or maintaining speed.

2. What are the possible causes of the U11D4 code in a Chrysler vehicle?

Potential causes of the U11D4 code include a faulty accelerator pedal position sensor, damaged wiring or connectors in the pedal position circuit, or issues with the powertrain control module (PCM).

3. How serious is the U11D4 code in a Chrysler vehicle?

The U11D4 code should be addressed promptly to avoid potential safety hazards and further damage to the vehicle. It is recommended to diagnose and repair the issue as soon as possible.

4. Can I continue to drive my Chrysler vehicle with the U11D4 code present?

It is not recommended to drive the vehicle with the U11D4 code present, as it may lead to reduced engine power and potentially unsafe driving conditions. It is best to have the issue diagnosed and repaired before driving the vehicle again.

5. How can I diagnose and repair the U11D4 code in my Chrysler vehicle?

Diagnosing the U11D4 code typically involves using a diagnostic scanner to retrieve the specific fault codes and then testing the accelerator pedal position sensor, wiring, and connectors for any faults. Repair may involve replacing the sensor, repairing damaged wiring, or addressing PCM issues.

6. Are there any DIY tips for troubleshooting the U11D4 code in a Chrysler vehicle?

While some basic diagnostic steps can be taken, such as checking for loose or damaged wiring connections, diagnosing and repairing the U11D4 code may require specialized tools and expertise. It is recommended to seek professional help for accurate diagnosis and repair.

7. Will resetting the fault codes make the U11D4 code disappear in my Chrysler vehicle?

Resetting the fault codes may temporarily clear the check engine light, but the U11D4 code is likely to reappear if the underlying issue is not addressed. It is important to diagnose and repair the root cause of the code to prevent future occurrences.

8. How much does it typically cost to fix the U11D4 code in a Chrysler vehicle?

The cost of repairing the U11D4 code can vary depending on the specific cause of the issue, the labor rates in your area, and whether any parts need to be replaced. It is recommended to obtain quotes from reputable mechanics or dealerships for an accurate estimate.

9. Can the U11D4 code be a recurring issue in Chrysler vehicles?

In some cases, the U11D4 code may reappear if the underlying problem persists or if related components fail. Proper diagnosis, repair, and regular maintenance can help prevent the code from recurring in the future.

10. Is the U11D4 code specific to Chrysler vehicles only?

While the U11D4 code may be more common in Chrysler vehicles, similar codes related to lost pedal position messages can occur in other vehicle makes and models. It is essential to refer to the specific diagnostic information for your vehicle when addressing this issue.