U111E 2019 GMC Sierra Code - Lost Communication with EVAP Purge Pump
Quick Answer
Purge capacity is being reduced by technologies that improve fuel economy. Common causes include Faulty Evaporative Emission Purge Pump, Evaporative Emission Purge Pump harness is open or shorted, Evaporative Emission Purge Pump 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
- U111E 2019 GMC Sierra indicates Lost Communication with EVAP Purge Pump.
- Common causes
- Common causes include Faulty Evaporative Emission Purge Pump, Evaporative Emission Purge Pump harness is open or shorted, Evaporative Emission Purge Pump 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 U111E 2019 GMC Sierra Description
What are the Possible Causes of the DTC U111E 2019 GMC Sierra?
- Faulty Evaporative Emission Purge Pump
- Evaporative Emission Purge Pump harness is open or shorted
- Evaporative Emission Purge Pump circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC U111E 2019 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 U111E 2019 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.
Need more information about the U111E 2019 GMC Sierra code?
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Frequently Asked Questions about U111E 2019 GMC Sierra Code
What does the OBDII code U111E mean on a 2019 GMC Sierra?
The U111E code indicates "Lost Communication with EVAP Purge Pump," meaning the vehicle's control module cannot communicate with the EVAP purge pump module.
What are the symptoms of the U111E code on a 2019 GMC Sierra?
Common symptoms include a check engine light, possible EVAP system-related codes, reduced fuel efficiency, or difficulty passing an emissions test.
What causes the U111E code on a 2019 GMC Sierra?
The most common causes include a faulty EVAP purge pump, damaged wiring, poor electrical connections, or a malfunctioning control module.
Can I drive my 2019 GMC Sierra with the U111E code?
While the truck may still be drivable, it is best to diagnose and repair the issue promptly, as it could impact emissions performance and fuel efficiency.
How do I diagnose the U111E code on my 2019 GMC Sierra?
Start by checking the EVAP purge pump wiring and connectors for damage or corrosion. Use a scan tool to verify communication with the EVAP purge pump module.
What tools are needed to troubleshoot the U111E code?
A diagnostic scan tool, a multimeter, and a wiring diagram for the EVAP system are typically required for troubleshooting.
How much does it cost to repair the U111E code on a 2019 GMC Sierra?
Repairs can range from $100 to $500 or more, depending on whether the issue is a simple wiring fix or requires replacing the EVAP purge pump.
Can a U111E code be caused by a dead battery?
Yes, a low or dead battery can cause communication issues, including the U111E code, so ensure the battery is fully charged.
What is the EVAP purge pump, and why is it important?
The EVAP purge pump helps control fuel vapors in the evaporative emissions system, reducing harmful emissions and ensuring proper fuel efficiency.
How do I clear the U111E code after repairs?
Use an OBDII scan tool to clear the code, but only after confirming that the underlying issue has been resolved.
Discuss the causes and fixes for U111E 2019 GMC Sierra OBDII Code
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