AutoCodes – Chevrolet – P20BA 2014 Chevrolet Silverado

P20BA 2014 Chevrolet Silverado Code - Reductant Heater 1 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: P20BA 2014 Chevrolet Silverado indicates Reductant Heater 1 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 300

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 P20BA 2014 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 tank heater resistance is greater or less than a calibrated value for greater than 8 s.

OBDII Code P20BA 2014 Chevrolet Silverado - Reductant Heater 1 Performance - AutoCodes.com — P20BA 2014 Chevrolet Silverado Code - Reductant Heater 1 Performance

What does this mean?

What are the Possible Causes of the DTC P20BA 2014 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 P20BA 2014 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 P20BA 2014 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 P20BA 2014 Chevrolet Silverado code?

Need more information on how to fix the P20BA 2014 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P20BA 2014 Chevrolet Silverado 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 P20BA 2014 Chevrolet Silverado Code

1. What does the OBDII code P20BA mean on a 2014 Chevrolet Silverado?

P20BA indicates an issue with the performance of Reductant Heater 1, which is part of the diesel exhaust fluid (DEF) system responsible for reducing emissions.

2. What are the common symptoms of code P20BA in a 2014 Silverado?

Symptoms may include the check engine light turning on, poor DEF system performance, reduced fuel efficiency, or a warning about the DEF system on the dashboard.

3. What causes the P20BA code to appear?

Common causes include a malfunctioning reductant heater, damaged wiring or connectors, a blown fuse, or a faulty DEF control module.

4. Can I drive my Silverado with the P20BA code?

While the truck may still drive, prolonged operation with this code can lead to reduced performance and potential emissions system failure. Itâ€™s best to address the issue promptly.

5. How is the P20BA code diagnosed on a 2014 Chevrolet Silverado?

A mechanic will typically use a diagnostic scanner to confirm the code, inspect the reductant heater and related wiring, and test the system for continuity and functionality.

6. What is the function of Reductant Heater 1 in a Silverado?

Reductant Heater 1 prevents diesel exhaust fluid from freezing in cold temperatures, ensuring the DEF system operates properly.

7. How do you fix the P20BA code on a Silverado?

Repairs may involve replacing the reductant heater, repairing faulty wiring or connectors, replacing a blown fuse, or reprogramming the DEF control module.

8. How much does it cost to repair the P20BA code on a 2014 Silverado?

The cost can range from $200 to $800, depending on whether the heater, wiring, or control module needs replacement.

9. Can a bad reductant heater damage other parts of the DEF system?

Yes, if the DEF system cannot function properly, it may lead to clogged injectors or other emission-related issues over time.

10. How can I prevent the P20BA code from recurring?

Regular maintenance of the DEF system, including inspecting wiring and ensuring the heater is functional in cold conditions, can help prevent this code.