U111E 2020 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 2020 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 2020 GMC Sierra Description
What are the Possible Causes of the DTC U111E 2020 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 2020 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 2020 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 U111E 2020 GMC Sierra Code
1. What are the common symptoms of OBDII code U111E in a 2020 GMC Sierra related to lost communication with the EVAP purge pump?
- Common symptoms include the check engine light illuminating, rough idling, decreased fuel efficiency, and potential issues with the vehicle's emissions system.
2. What are the possible causes of OBDII code U111E indicating lost communication with the EVAP purge pump in a 2020 GMC Sierra?
- Potential causes can include a faulty EVAP purge pump, damaged wiring or connectors, a failed EVAP system control module, or a communication error within the vehicle's network.
3. How can I diagnose and troubleshoot OBDII code U111E in a 2020 GMC Sierra related to lost communication with the EVAP purge pump?
- Diagnosing this code typically involves checking the EVAP purge pump for proper operation, inspecting wiring and connectors for damage, scanning the vehicle's network for communication issues, and testing the EVAP system control module.
4. Is it safe to continue driving a 2020 GMC Sierra with OBDII code U111E indicating lost communication with the EVAP purge pump?
- It is generally not recommended to drive the vehicle with this code present, as it can lead to potential emissions issues and affect the vehicle's performance. It is best to address the problem promptly.
5. Can I repair OBDII code U111E in a 2020 GMC Sierra related to lost communication with the EVAP purge pump myself?
- Depending on your experience and tools, you may be able to address this issue yourself by checking and repairing wiring connections, replacing the EVAP purge pump if necessary, or resetting the vehicle's computer after fixing the problem.
6. How much does it typically cost to repair OBDII code U111E in a 2020 GMC Sierra caused by lost communication with the EVAP purge pump?
- The cost of repair can vary depending on the exact cause of the issue. It may range from a simple fix like reconnecting a loose wire to replacing the EVAP purge pump or control module. Costs can range from a few dollars for parts to a few hundred dollars for more extensive repairs.
7. Will resetting the OBDII code U111E in a 2020 GMC Sierra related to lost communication with the EVAP purge pump make it go away permanently?
- Resetting the code may clear the check engine light temporarily, but if the underlying issue causing the code is not addressed, the code is likely to reappear. It's essential to diagnose and fix the root cause of the problem to prevent recurring issues.
8. How long does it typically take to repair OBDII code U111E in a 2020 GMC Sierra due to lost communication with the EVAP purge pump?
- The repair time can vary depending on the exact cause of the code and the complexity of the fix. Simple issues like a loose connector can be resolved quickly, while more involved repairs may take several hours or longer if parts need to be ordered.
9. Can OBDII code U111E in a 2020 GMC Sierra related to lost communication with the EVAP purge pump cause any long-term damage to the vehicle?
- Ignoring this code can potentially lead to emissions system failures or affect the vehicle's overall performance. It is important to address the issue promptly to prevent any long-term damage to the vehicle.
10. Are there any preventive maintenance tips to avoid encountering OBDII code U111E in a 2020 GMC Sierra due to lost communication with the EVAP purge pump?
- Regularly inspecting the EVAP system components for signs of wear or damage, ensuring proper wiring connections, and addressing any check engine light warnings promptly can help prevent issues that may trigger this code.
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