U1411 Jeep Code: Quick Fixes For Fuel Volume Signal Issues

Welcome to our expert guide on the U1411 Jeep code. If you’ve encountered this code during a diagnostic scan, don’t fret! 

As a seasoned mechanic with years of experience working on Jeeps, I’m here to provide valuable insights and help you confidently resolve the issue.

In this comprehensive article, we will delve into the meaning, severity, symptoms, causes, and diagnosis of the U1411 code. I’ll share my expertise and insider knowledge to empower you to get your Jeep back on the road in no time.

So let’s unlock the secrets behind the U1411 code. Your Jeep’s optimal performance awaits!

U1411 Jeep: A Quick Overview

Below is a summary of the U1411 Jeep Code. Check it out!

• Definition: Implausible Fuel Volume Signal Received
• Severity: Medium
• DIY Skill Level: Advanced
• Continue To Drive?: Yes
• Estimated Repair Cost: $100 – $400

Understanding The U1411 Code In Jeeps

The U1411 code in Jeeps is an OBD-II diagnostic trouble code that indicates an “Implausible Fuel Volume Signal Received.” When this code appears during a scan, it means that the Powertrain Control Module (PCM) has detected an inconsistent or unreliable fuel volume signal.

Several systems and components work together in your Jeep to ensure proper fuel volume measurement and delivery. The main players involved are:

• PCM
• Front Control Module (FCM)
• Fuel Pump Control Module (FPCM)
• Fuel Level Sensor
• Fuel Rail Pressure Sensor
• The Controller Area Network (CAN) bus

When the FCM in your Jeep fails to receive a fuel volume signal from the Cluster Module over the CAN B bus, it sends a fuel volume signal to the PCM over the CAN C bus. However, if the PCM determines that the signal sent by the FCM over CAN C is implausible or inconsistent, it will result in the U1411 code being triggered.

It’s worth noting that the U1411 code is most commonly found in these Jeep models: Jeep Grand Cherokee (2005, 2006), Jeep Liberty (2006), and Jeep Commander. Additionally, it is commonly associated with other codes such as P0157 (Oxygen Sensor Circuit Low Voltage Bank 2 Sensor 2), U110C (Lost Fuel Volume Message), and U110E (Lost Ambient Temperature Message).

Read more: Dodge, Chrysler, and Jeep OBD1 Codes and OBD2 Codes [Full PDF Free Download]

Assessing The Severity: Is It Safe To Drive With The U1411 Jeep Code?

The severity level of the U1411 code in your Jeep can be considered moderate. While this code typically indicates an issue with the fuel volume signal, it is not a critical or immediate danger to your safety.

It is generally safe to drive with this code. However, it is important not to ignore the U1411 code and address it promptly. Ignoring the code may lead to potential fuel delivery problems, affecting your Jeep’s performance and fuel efficiency. It is advisable to have the issue diagnosed and repaired as soon as possible to prevent further complications.

U1411 Jeep Symptoms: How The Code Manifests In Your Jeep

The U1411 code in your Jeep may manifest itself through various symptoms, indicating an issue with the fuel volume signal. Keep an eye out for the following signs:

• Illumination of the Check Engine Light (MIL)
• Difficulty starting the engine
• No crank condition
• Poor fuel economy
• Stalling or hesitation during acceleration
• Loss of power
• Inaccurate fuel gauge readings
• The instrument cluster remains inactive after remote start until the key is inserted and turned on

Read more: Jeep Dashboard Symbols and Meaning (FULL list, Free Download)

Exploring The Causes Of the U1411 Code

To effectively diagnose and resolve the U1411 code in your Jeep, it is important to understand its potential causes. The following are common culprits associated with this code:

• Ignition switch issues
• Remote starter problems
• Open or shorted CAN C Bus circuit
• Failed instrument cluster module
• Faulty FCM 
• Defective PCM 
• CAN C module problems

Diagnosis And Repair: Resolving The U1411 Code Like A Pro

In this section, we’ll provide you with the tools, parts, step-by-step guide, and estimated costs to resolve the U1411 code in your Jeep. Let’s begin. 

Essential Tools And Parts

To diagnose and repair the U1411 code, you may need the following tools and parts:

• OBD-II scanner 
• Di-electric cleaner
• Replacement ignition switch (if needed)
• Replacement parts for wiring, connectors, circuits, PCM, Instrument Cluster, and FCM (as required)

Step-by-step Procedure

The procedure is divided into two parts, Basic and Advanced, to ensure a comprehensive and systematic approach to troubleshooting and resolving issues.

Basic Steps

Trying out the following steps in many situations can often resolve the issue. 

You can give them a shot in the comfort of your own home before deciding whether to take your car to a repair shop or dealer. 

These steps are accessible to those with beginner to intermediate skill and knowledge levels:

Step 1: First, check the ignition switch for malfunction or damage. Replace it if necessary.

Step 2: If your Jeep has a remote starter, ensure it is installed and functioning properly. Reprogram or replace it if needed.

Advanced Steps

If you have completed the basic steps and the U1411 code persists, doing more advanced troubleshooting that involves working with complex wiring and specific components may be necessary. 

Please note that these steps require advanced automotive knowledge and skill. It is recommended to seek assistance from a qualified mechanic or automotive professional with the expertise to perform these tasks accurately and safely.

Step 1: Inspect the wiring and connections related to the CAN bus system, including the CAN C Bus circuit. Repair or replace any damaged or faulty wiring, connectors, or circuits.

Step 2:  Perform a thorough check on the PCM using the following steps:

1. Disconnect all PCM connectors carefully.
2. Use a di-electric cleaner to spray and clean all PCM connections.
3.  Allow the cleaner to sit and dry.
4.  Clean the exposed large cable behind the fuse box under the hood on the driver’s side. Let it sit overnight alongside the disconnected PCM cables.
5.  Reconnect the cables and check if the U1411 code is reset. If not, reprogram or replace the PCM module.

Step 3: Inspect the instrument cluster module for damage or malfunction. Ensure it is properly connected and all wiring is in good condition. Replace or repair as needed.

Step 4: Perform the same inspection with the FCM. Replace or repair if necessary.

Step 5: Clear the U1411 code using an OBD-II scanner and test drive the vehicle.

How Much Does It Cost To Fix The U1411 Jeep Code?

The cost of repairing the U1411 code in a Jeep can vary depending on the specific cause and the parts that need replacement. Below is a table showing estimated costs for some common repair tasks related to the U1411 code based on the troubleshooting steps mentioned earlier. 

Remember that these estimated costs are subject to variation depending on factors such as labor rates and the Jeep model. Consulting with a qualified mechanic will provide you with a more accurate estimate tailored to your specific situation.

U1411 Jeep Infographic

Final Thoughts

Congratulations! You now have a solid understanding of the U1411 Jeep code, from its meaning to symptoms, causes, and possible repair procedures. Armed with this knowledge, you’re better equipped to tackle this issue should it arise in your vehicle.

Remember, if you’re unsure about performing the diagnosis and repair yourself, it’s always wise to seek the expertise of a professional mechanic. They have the experience and specialized tools to accurately diagnose the problem and ensure a proper fix.

We hope this guide has been helpful to you. If you found it informative, don’t hesitate to share it with fellow Jeep owners who may benefit from this knowledge. Feel free to leave any questions or comments below. Happy driving!

Reference Sources

1. Zinref.ru, Jeep Grand Cherokee WK. Manual – part 1130.
2. RepairPal, DTC Code U1411.
3. JustAnswer, Question about U1411 Code in 2006 Jeep Commander Code.