AutoCodes – Chevrolet – P20BE 2017 Chevrolet Silverado

P20BE 2017 Chevrolet Silverado 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 2017 Chevrolet Silverado 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.

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Code Popularity 351

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 29, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P20BE 2017 Chevrolet Silverado 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 2017 Chevrolet Silverado - Reductant Heater 2 Performance - AutoCodes.com — P20BE 2017 Chevrolet Silverado Code - Reductant Heater 2 Performance

What does this mean?

What are the Possible Causes of the DTC P20BE 2017 Chevrolet Silverado?

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 2017 Chevrolet Silverado?

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 2017 Chevrolet Silverado 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 2017 Chevrolet Silverado code?

Need more information on how to fix the P20BE 2017 Chevrolet Silverado code? Get Access to Factory Service Manuals

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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 P20BE 2017 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P20BE on a 2017 Chevrolet Silverado?

- Common symptoms include the Check Engine light illuminating, reduced engine performance, and potential emission system issues.

2. What does the OBDII code P20BE indicate on a 2017 Chevrolet Silverado?

- The code P20BE indicates a performance issue with Reductant Heater 2 in the exhaust aftertreatment system.

3. What are the possible causes of code P20BE on a 2017 Chevrolet Silverado?

- Possible causes include a faulty Reductant Heater 2, wiring issues, a failed sensor, or a problem with the powertrain control module.

4. How can I diagnose OBDII code P20BE on a 2017 Chevrolet Silverado?

- Diagnosis typically involves using a scan tool to retrieve the code, checking the wiring and connections related to the Reductant Heater 2, and testing the heater for proper operation.

5. Can I continue driving my 2017 Chevrolet Silverado with OBDII code P20BE?

- It is not recommended to drive the vehicle with this code as it can lead to reduced engine performance and potential damage to the emission control system.

6. How can I repair OBDII code P20BE on a 2017 Chevrolet Silverado?

- Repair may involve replacing the Reductant Heater 2, repairing any damaged wiring, resetting the fault code, and clearing the Check Engine light.

7. Is it safe to clear the OBDII code P20BE on a 2017 Chevrolet Silverado without fixing the issue?

- Clearing the code without addressing the underlying problem may temporarily turn off the Check Engine light, but the issue will likely reoccur, affecting performance and emissions.

8. Can a DIY enthusiast fix OBDII code P20BE on a 2017 Chevrolet Silverado?

- Depending on their skill level and access to tools, a DIY enthusiast may be able to address this code by following repair guides and utilizing proper diagnostic equipment.

9. How much does it cost to repair OBDII code P20BE on a 2017 Chevrolet Silverado at a dealership?

- Repair costs at a dealership can vary based on the exact cause of the code, but expect to pay for parts, labor, and diagnostic fees, which may add up to a few hundred dollars or more.

10. How often does OBDII code P20BE occur in a 2017 Chevrolet Silverado?

- The occurrence of code P20BE can vary, but it is not uncommon in vehicles with emission control system issues, especially as they age or if maintenance is neglected.