AutoCodes – Dodge – U11D4 Dodge

U11D4 Dodge 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 Dodge 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.

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Code Popularity 1,315

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
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Code U11D4 Dodge 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 Dodge - Lost Pedal Position Message - AutoCodes.com — U11D4 Dodge Code - Lost Pedal Position Message

What does this mean?

What are the Possible Causes of the DTC U11D4 Dodge?

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

How to Fix the DTC U11D4 Dodge?

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 Dodge 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 U11D4 Dodge Code

1. What are the common symptoms of OBDII code U11D4 in a Dodge related to the Lost Pedal Position Message?

- Common symptoms include the vehicle going into limp mode, reduced engine power, and possible difficulty accelerating.

2. What are the potential causes of the U11D4 code in a Dodge?

- The U11D4 code may be triggered by issues with the throttle pedal position sensor, wiring issues, or a faulty engine control module (ECM).

3. How can I diagnose the cause of the U11D4 code in my Dodge?

- Diagnosing the U11D4 code typically involves checking the throttle pedal position sensor for proper operation, inspecting the wiring for any damage, and using a scan tool to analyze data from the ECM.

4. Are there any DIY repair tips for fixing the U11D4 code in a Dodge?

- DIY repair tips may include checking and cleaning the throttle pedal sensor connection, inspecting for loose or damaged wires, and resetting the ECM by disconnecting the battery for a few minutes.

5. Can driving with the U11D4 code present cause further damage to my Dodge?

- Driving with the U11D4 code can potentially cause further damage if the underlying issue is not addressed promptly, as it may lead to unsafe driving conditions and potential engine damage.

6. Is it safe to continue driving my Dodge with the U11D4 code illuminated?

- It is not recommended to drive your Dodge with the U11D4 code illuminated, as it can affect the vehicle's performance and safety. It's best to have the issue diagnosed and repaired as soon as possible.

7. How much does it typically cost to repair the U11D4 code in a Dodge?

- The cost of repairing the U11D4 code in a Dodge can vary depending on the root cause of the issue. Costs may include parts replacement, labor charges, and diagnostic fees from a professional mechanic.

8. Can a simple reset of the ECM clear the U11D4 code in a Dodge?

- In some cases, a simple reset of the ECM by disconnecting the battery for a few minutes may clear the U11D4 code temporarily. However, if the underlying issue is not addressed, the code is likely to return.

9. Will a U11D4 code in a Dodge always require professional repair?

- While some DIY troubleshooting may help resolve the U11D4 code, it is recommended to seek professional help for a thorough diagnosis and proper repair to ensure the issue is resolved correctly.

10. How long can I safely wait before addressing the U11D4 code in my Dodge?

- It is best to address the U11D4 code in your Dodge as soon as possible to prevent further issues and ensure the safety and performance of your vehicle. Delaying repairs can lead to more severe problems down the line.