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U11C1 Dodge Code - Reductant Control Module Received Implausible Data From ECM/PCM

Quick Answer

The U11C1 diagnostic trouble code (DTC) for Dodge vehicles indicates that the Reductant Control Module (RCM) has received implausible data from the Engine Control Module/Powertrain Control Module (ECM/PCM). Common causes include Wiring issues or poor connections between the Reductant Control Module and the Engine Control Module/Powertrain Control Module, Faulty sensors within the urea injection system, Software glitches or communication errors between the modules. 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
U11C1 Dodge indicates Reductant Control Module Received Implausible Data From ECM/PCM.
Common causes
Common causes include Wiring issues or poor connections between the Reductant Control Module and the Engine Control Module/Powertrain Control Module, Faulty sensors within the urea injection system, Software glitches or communication errors between the modules.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 09, 2024
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Code U11C1 Dodge Description

The U11C1 diagnostic trouble code (DTC) for Dodge vehicles indicates that the Reductant Control Module (RCM) has received implausible data from the Engine Control Module/Powertrain Control Module (ECM/PCM). The Reductant Control Module is responsible for monitoring and controlling the urea injection system in vehicles equipped with Selective Catalytic Reduction (SCR) technology to reduce harmful emissions. When the RCM detects that the data it is receiving from the ECM/PCM is inaccurate or implausible, it triggers the U11C1 code.

OBDII Code U11C1 Dodge - Reductant Control Module Received Implausible Data From ECM/PCM
U11C1 Dodge Code - Reductant Control Module Received Implausible Data From ECM/PCM

Common Causes of U11C1 Dodge

  1. Wiring issues or poor connections between the Reductant Control Module and the Engine Control Module/Powertrain Control Module
  2. Faulty sensors within the urea injection system
  3. Software glitches or communication errors between the modules
  4. Malfunction within the Reductant Control Module or Engine Control Module/Powertrain Control Module
  5. Electrical issues such as corrosion or damage to wiring harnesses

Symptoms of U11C1 Dodge

  1. Illuminated check engine light
  2. Reduced fuel efficiency
  3. Engine performance issues
  4. Increased emissions
  5. Compliance concerns with emissions regulations

How to Fix U11C1 Dodge

  1. Use a diagnostic scanner to retrieve the U11C1 code and further investigate the communication error between the modules.
  2. Inspect the wiring harnesses and connections between the Reductant Control Module and the Engine Control Module/Powertrain Control Module for any damage or corrosion.
  3. Test the sensors within the urea injection system to ensure they are functioning properly.
  4. Update the software in the modules if necessary to address any glitches or communication errors.
  5. Replace the Reductant Control Module or Engine Control Module/Powertrain Control Module if a malfunction is detected and cannot be repaired.

Cost to Fix U11C1 Dodge

The typical repair costs for addressing the U11C1 code can vary depending on the specific cause of the issue and the parts or components that need to be replaced. In general, the cost for diagnosing and repairing this issue could range from $200 to $500, including parts and labor. However, it is important to note that the actual cost may vary based on factors such as the location of the repair shop, the vehicle's make and model, and the specific diagnosis time and labor rates. It is recommended to consult with a qualified mechanic or auto repair shop for an accurate estimate based on the individual circumstances.

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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 U11C1 Dodge Code

1. What are the common symptoms of OBDII code U11C1 in a Dodge related to the Reductant Control Module receiving implausible data from the ECM/PCM?

- Common symptoms include poor engine performance, reduced fuel efficiency, and the illumination of the check engine light.

2. What are some possible causes of OBDII code U11C1 in a Dodge?

- Possible causes may include a faulty Reductant Control Module, issues with the ECM/PCM communication, wiring problems, or sensor malfunctions.

3. How can I diagnose the OBDII code U11C1 in my Dodge?

- Diagnosis typically involves using a diagnostic scanner to retrieve the code, checking for any related codes, inspecting wiring and connectors, and testing the Reductant Control Module and associated components.

4. What steps can I take to repair OBDII code U11C1 in my Dodge?

- Repair may involve clearing the code and resetting the system, repairing or replacing damaged wiring, replacing the Reductant Control Module, updating software, or addressing any other underlying issues.

5. Can I continue driving my Dodge with OBDII code U11C1 present?

- It is not recommended to continue driving with this code present, as it can lead to further engine damage and potentially higher repair costs if left unresolved.

6. How much does it typically cost to repair OBDII code U11C1 in a Dodge?

- The cost of repair can vary depending on the specific issue causing the code, but it may range from a few hundred to over a thousand dollars, including parts and labor.

7. Are there any preventative maintenance steps to avoid OBDII code U11C1 in a Dodge?

- Regularly scheduled maintenance, such as keeping up with oil changes, checking fluid levels, and addressing any warning lights promptly, can help prevent issues that may trigger this code.

8. Is it possible to reset OBDII code U11C1 in a Dodge without visiting a mechanic?

- While you can attempt to clear the code using a diagnostic scanner, it is important to address the underlying issue causing the code to prevent it from reoccurring.

9. Can a DIY enthusiast with basic automotive knowledge repair OBDII code U11C1 in a Dodge?

- Depending on the specific cause, some repairs related to this code may be within reach of a DIY enthusiast, but more complex issues may require professional diagnosis and repair.

10. How long does it take to repair OBDII code U11C1 in a Dodge?

- The repair time can vary based on the cause of the code and the extent of the necessary repairs, but it can typically take a few hours to a full day to diagnose and address the issue.

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