AutoCodesGMC – P20BE 2014 GMC Sierra

P20BE 2014 GMC Sierra Code - Reductant Heater 2 Performance

Quick Answer

As reductant will freeze at temperatures below -11°C (12°F), there are 2 reductant heaters located in the reductant tank. Common causes include Faulty Reductant Heater, Reductant Heater harness is open or shorted, Reductant Heater 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
P20BE 2014 GMC Sierra indicates Reductant Heater 2 Performance.
Common causes
Common causes include Faulty Reductant Heater, Reductant Heater harness is open or shorted, Reductant Heater 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 143
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 29, 2022
💬 Need more help? Ask Coddy for instant answers — it's free!

Code P20BE 2014 GMC Sierra Description

As reductant will freeze at temperatures below -11°C (12°F), there are 2 reductant heaters located in the reductant tank. One heats the reductant in the tank, and one heats the reductant supplied to the reductant injector supply pipe. The Engine Control Module (ECM) monitors the reductant temperature in the tank in order to determine if the reductant temperature is below its freeze point. If the ECM determines that the reductant may be frozen, it activates a "defrost strategy" energizing the reductant eater. This energizing action terminates when the temperature sensor measures a threshold value over which the heater must be deactivated.
The Diagnostic Trouble Code (DTC) will be set when the ECM indicates the reductant line heater resistance is greater or less than a calibrated value for greater than 8 s.
OBDII Code P20BE 2014 GMC Sierra - Reductant Heater 2 Performance - AutoCodes.com
P20BE 2014 GMC Sierra Code - Reductant Heater 2 Performance

What are the Possible Causes of the DTC P20BE 2014 GMC Sierra?

  • Faulty Reductant Heater
  • Reductant Heater harness is open or shorted
  • Reductant Heater circuit poor electrical connection
  • Faulty Reductant Pump and Sensor Assembly
  • Faulty Reductant Control Module

How to Fix the DTC P20BE 2014 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 P20BE 2014 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 P20BE 2014 GMC Sierra code?

Need more information on how to fix the P20BE 2014 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P20BE 2014 GMC Sierra code diagnosed by a professional: Find a repair shop in your area

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 P20BE 2014 GMC Sierra Code

1. What are common symptoms of OBDII code P20BE on a 2014 GMC Sierra related to Reductant Heater 2 Performance?

The common symptoms include the check engine light coming on, reduced engine performance, and potential issues with the vehicle passing emissions tests.

2. What are the possible causes of OBDII code P20BE on a 2014 GMC Sierra?

The code P20BE typically indicates a problem with the Reductant Heater 2 in the selective catalytic reduction (SCR) system. Possible causes include a faulty heater element, wiring issues, or a malfunctioning control module.

3. How can I diagnose the OBDII code P20BE on my 2014 GMC Sierra?

Diagnosing the P20BE code involves using a scan tool to retrieve the specific fault code, checking the Reductant Heater 2 system for any visible damage or loose connections, and testing the components for proper functionality.

4. What are the repair options for OBDII code P20BE on a 2014 GMC Sierra?

Repair options for the P20BE code may include replacing the Reductant Heater 2 element, repairing any damaged wiring or connections, or replacing the control module if necessary. It is recommended to follow the manufacturer's diagnostic and repair procedures.

5. Can I drive my 2014 GMC Sierra with OBDII code P20BE?

It is generally not recommended to drive your vehicle with an active OBDII code like P20BE, as it can potentially cause further damage to the vehicle and negatively impact its performance. It is best to address the issue promptly to avoid more serious problems.

6. How much does it cost to repair OBDII code P20BE on a 2014 GMC Sierra?

The cost of repairing the P20BE code can vary depending on the specific cause of the issue, the labor rates in your area, and whether you choose to address the problem yourself or take it to a professional mechanic. Costs may include parts and labor.

7. Can I reset the OBDII code P20BE on my 2014 GMC Sierra without repairing the issue?

While you can clear the code temporarily using a scan tool, it is not recommended to do so without addressing the underlying problem. Resetting the code without fixing the issue will likely result in the code reappearing once the vehicle's onboard diagnostics run again.

8. Will OBDII code P20BE on a 2014 GMC Sierra cause the vehicle to fail emissions testing?

Yes, the presence of the P20BE code typically indicates a problem with the emissions control system, specifically the Reductant Heater 2 performance. This issue may cause the vehicle to fail emissions testing until it is repaired and the code is cleared.

9. How long does it take to repair OBDII code P20BE on a 2014 GMC Sierra?

The repair time for the P20BE code can vary depending on the exact cause of the issue, the availability of parts, and the expertise of the person performing the repair. It could take anywhere from a few hours to a full day to diagnose and fix the problem.

10. Is OBDII code P20BE a common issue on 2014 GMC Sierra vehicles?

While the P20BE code related to Reductant Heater 2 performance may not be one of the most common OBDII codes, it can still occur in 2014 GMC Sierra vehicles due to various factors affecting the SCR system. Regular maintenance and proper care can help prevent such issues.

Discuss the causes and fixes for P20BE 2014 GMC Sierra OBDII Code

Code P20BE 2014 GMC Sierra comments

No comments found for this page.

AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play