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U010E 2017 GMC Sierra Code - Lost Communication With Reductant Sensor Module

Quick Answer

The U010E diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates that there is a communication issue with the Reductant Sensor Module (RSM). Common causes include Faulty Reductant Sensor Module: The most common cause of the U010E code is a malfunctioning Reductant Sensor Module that is not communicating properly with the ECM, Wiring Issues: Corrosion, damage, or loose connections in the wiring harnesses between the ECM and the Reductant Sensor Module can disrupt communication, Software Glitch: An issue with the vehicle's software or ECM programming can also trigger the U010E code. 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
U010E 2017 GMC Sierra indicates Lost Communication With Reductant Sensor Module.
Common causes
Common causes include Faulty Reductant Sensor Module: The most common cause of the U010E code is a malfunctioning Reductant Sensor Module that is not communicating properly with the ECM, Wiring Issues: Corrosion, damage, or loose connections in the wiring harnesses between the ECM and the Reductant Sensor Module can disrupt communication, Software Glitch: An issue with the vehicle's software or ECM programming can also trigger the U010E code.
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 13, 2024
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Code U010E 2017 GMC Sierra Description

The U010E diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates that there is a communication issue with the Reductant Sensor Module (RSM). The Reductant Sensor Module is responsible for monitoring the levels of diesel exhaust fluid (DEF) in the vehicle's selective catalytic reduction (SCR) system. This system is crucial for reducing harmful emissions and ensuring compliance with emissions regulations.

OBDII Code U010E 2017 GMC Sierra - Lost Communication With Reductant Sensor Module
U010E 2017 GMC Sierra Code - Lost Communication With Reductant Sensor Module

Common Causes of U010E 2017 GMC Sierra

  1. Faulty Reductant Sensor Module: The most common cause of the U010E code is a malfunctioning Reductant Sensor Module that is not communicating properly with the ECM.
  2. Wiring Issues: Corrosion, damage, or loose connections in the wiring harnesses between the ECM and the Reductant Sensor Module can disrupt communication.
  3. Software Glitch: An issue with the vehicle's software or ECM programming can also trigger the U010E code.
  4. Power Supply Problems: Issues with the power supply to the Reductant Sensor Module can cause communication failures.

Symptoms of U010E 2017 GMC Sierra

  1. Check Engine Light: The most common symptom associated with the U010E code is the illumination of the check engine light on the vehicle's dashboard.
  2. Reduced Fuel Efficiency: A malfunctioning Reductant Sensor Module can lead to decreased fuel efficiency as the ECM struggles to optimize DEF injection.
  3. Poor Emissions Performance: The vehicle may fail emissions tests or emit higher levels of pollutants due to inaccurate DEF injection.
  4. Engine Performance Issues: In severe cases, the vehicle may experience performance issues such as reduced power or rough idling.

How to Fix U010E 2017 GMC Sierra

  1. Diagnose the Issue: Use a diagnostic scanner to retrieve the specific error codes and pinpoint the communication issue with the Reductant Sensor Module.
  2. Inspect Wiring: Check the wiring harnesses between the ECM and the Reductant Sensor Module for any signs of damage, corrosion, or loose connections.
  3. Test Power Supply: Ensure that the Reductant Sensor Module is receiving the proper voltage and that there are no issues with the power supply.
  4. Replace Reductant Sensor Module: If the module is found to be faulty, it will need to be replaced with a new one.
  5. Clear Codes and Test: After the repair is completed, clear the error codes from the ECM and test the vehicle to ensure that the communication issue has been resolved.

Cost to Fix U010E 2017 GMC Sierra

The cost of repairing a U010E code on a 2017 GMC Sierra can vary depending on the specific cause of the issue and the labor rates in your area. In general, replacing a Reductant Sensor Module can cost between $200 and $500 for the part alone. Labor costs can range from $100 to $300, depending on the shop's hourly rates and the complexity of the repair. Overall, you can expect to pay anywhere from $300 to $800 for this repair, including parts and labor. It's always a good idea to get multiple quotes from different auto repair shops to ensure you're getting a fair price.

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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 U010E 2017 GMC Sierra Code

1. What does the OBDII code U010E mean on a 2017 GMC Sierra?

U010E indicates a loss of communication between the vehicle's main control modules and the Reductant Sensor Module, which monitors the diesel exhaust fluid (DEF) system.

2. What are common symptoms of U010E on a 2017 GMC Sierra?

Symptoms may include the check engine light turning on, DEF warning messages, possible limp mode activation, or reduced engine performance.

3. What causes the U010E code to appear on a 2017 GMC Sierra?

Common causes include faulty wiring or connectors in the DEF system, a malfunctioning Reductant Sensor Module, or issues with the CAN (Controller Area Network) communication circuit.

4. How do I fix the U010E code on my 2017 GMC Sierra?

Start by checking and repairing any damaged or corroded wiring or connectors in the DEF system. If the issue persists, test the Reductant Sensor Module and replace it if necessary.

5. Can driving with the U010E code damage my 2017 GMC Sierra?

While it may not cause immediate damage, ignoring the issue can lead to reduced engine performance or emissions compliance problems, which may worsen over time.

6. How do I diagnose the U010E code on a 2017 GMC Sierra?

Use a scan tool to check for related codes, inspect the wiring and connectors for damage, and test the Reductant Sensor Module and CAN network for proper communication.

7. Is the U010E code covered under warranty for a 2017 GMC Sierra?

It may be covered if your vehicle is still under the emissions or powertrain warranty. Check with your dealership for details.

8. Can a weak battery cause the U010E code on a 2017 GMC Sierra?

Yes, low voltage from a weak or failing battery can disrupt communication between modules and trigger the U010E code.

9. How much does it cost to repair the U010E code on a 2017 GMC Sierra?

Repair costs vary, but fixing damaged wiring or connectors may cost $100-$300, while replacing the Reductant Sensor Module can cost $500-$1,000, including labor.

10. Can I clear the U010E code without fixing it on my 2017 GMC Sierra?

You can clear the code with a scan tool, but it will likely return if the underlying issue is not resolved.

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