U010E 2018 GMC Sierra Code - Lost Communication With Reductant Sensor Module
Quick Answer
Devices connected to the Powertrain High-Speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Reductant Control Module, Reductant Control Module harness is open or shorted, Reductant Control Module circuit poor electrical connection. 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 2018 GMC Sierra indicates Lost Communication With Reductant Sensor Module.
- Common causes
- Common causes include Faulty Reductant Control Module, Reductant Control Module harness is open or shorted, Reductant Control Module circuit poor electrical connection.
- 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.
Code U010E 2018 GMC Sierra Description
What are the Possible Causes of the DTC U010E 2018 GMC Sierra?
- Faulty Reductant Control Module
- Reductant Control Module harness is open or shorted
- Reductant Control Module circuit poor electrical connection
How to Fix the DTC U010E 2018 GMC Sierra?
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 U010E 2018 GMC Sierra 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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Frequently Asked Questions about U010E 2018 GMC Sierra Code
What does the OBDII code U010E mean on a 2018 GMC Sierra?
The U010E code means there is a loss of communication between the vehicle's primary control modules and the Reductant Sensor Module, which monitors the diesel exhaust fluid (DEF) system.
What are the common symptoms of the U010E code?
Symptoms include the check engine light turning on, DEF system warnings, reduced engine power, or the vehicle entering a limp mode.
What causes the U010E code to appear?
Common causes include faulty wiring or connectors, a malfunctioning Reductant Sensor Module, a blown fuse, or issues with the vehicle’s CAN (Controller Area Network) communication system.
Can a bad Reductant Sensor Module trigger the U010E code?
Yes, a faulty or damaged Reductant Sensor Module can cause a loss of communication and trigger the U010E code.
How do I diagnose the U010E code on my GMC Sierra?
Start by checking the wiring and connectors for damage or corrosion, inspecting the Reductant Sensor Module, and testing the CAN bus communication with a scan tool.
Can I drive my 2018 GMC Sierra with the U010E code active?
Driving with this code is not recommended as it may lead to reduced engine performance, limp mode, or emissions-related issues that could damage the engine over time.
How do I fix the U010E code?
Repairs may involve replacing damaged wiring, reconnecting loose connectors, replacing the Reductant Sensor Module, or reprogramming the module using a scan tool.
Is the U010E code covered under warranty for a 2018 GMC Sierra?
Coverage depends on your vehicle's warranty terms and whether the issue is related to emissions components or powertrain defects. Check with your dealership for details.
What tools are needed to fix the U010E code?
You’ll need an OBDII scan tool to read and clear the code, a multimeter to test wiring, and possibly specialized tools for module reprogramming or replacement.
Can a software update resolve the U010E code?
In some cases, a software update for the vehicle’s control modules can resolve communication issues and clear the U010E code. Check with your dealership to see if a software update is available.
Discuss the causes and fixes for U010E 2018 GMC Sierra OBDII Code
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