AutoCodes – Chevrolet – B048E 2014 Chevrolet Silverado

B048E 2014 Chevrolet Silverado Code - Auxiliary Heater System Malfunction

Quick Answer

The Heating, Ventilation, and Air Conditioning (HVAC) Control Module sends a low side pulse width modulation (PWM) signal to request electrical auxiliary heater operation if the interior temperature is too low and additional heat is required. Common causes include Faulty Electrical Auxiliary Heater, Electrical Auxiliary Heater harness is open or shorted, Electrical Auxiliary Heater circuit poor electrical connection. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means: B048E 2014 Chevrolet Silverado indicates Auxiliary Heater System Malfunction.
Common causes: Common causes include Faulty Electrical Auxiliary Heater, Electrical Auxiliary Heater harness is open or shorted, Electrical Auxiliary Heater circuit poor electrical connection.
Severity: Low - monitor the vehicle and repair when practical.
Can I drive?: The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

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Code Popularity 317

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Nov 12, 2022

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B048E 2014 Chevrolet Silverado Description

The Heating, Ventilation, and Air Conditioning (HVAC) Control Module sends a low side pulse width modulation (PWM) signal to request electrical auxiliary heater operation if the interior temperature is too low and additional heat is required. The requested signal from the HVAC control module, battery positive, ignition, and ground circuits enable the electrical auxiliary heater to operate. The electrical auxiliary heater sends a ground signal to report the status of the heater operation. The Diagnostic Trouble Code (DTC) will be set when the feedback signal of the electrical auxiliary heater does not correspond with the requested PWM signal.

OBDII Code B048E 2014 Chevrolet Silverado - Auxiliary Heater System Malfunction - AutoCodes.com — B048E 2014 Chevrolet Silverado Code - Auxiliary Heater System Malfunction

What does this mean?

What are the Possible Causes of the DTC B048E 2014 Chevrolet Silverado?

Faulty Electrical Auxiliary Heater
Electrical Auxiliary Heater harness is open or shorted
Electrical Auxiliary Heater circuit poor electrical connection
Faulty Heating, Ventilation, and Air Conditioning (HVAC) Control Module

How to Fix the DTC B048E 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 does this mean?

Code Tech Notes

B048E:01 Auxiliary Heater System Malfunction Short to Battery
B048E:06 Auxiliary Heater System Malfunction Low Voltage/Open

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B048E 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 B048E 2014 Chevrolet Silverado code?

Need more information on how to fix the B048E 2014 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B048E 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 B048E 2014 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code B048E in a 2014 Chevrolet Silverado?

- The common symptoms of OBDII code B048E in a 2014 Chevrolet Silverado include a malfunctioning auxiliary heater system, decreased heating performance, and possibly a check engine light.

2. What causes the OBDII code B048E in a 2014 Chevrolet Silverado?

- The OBDII code B048E in a 2014 Chevrolet Silverado is typically caused by issues with the auxiliary heater system, such as a faulty heater control module, wiring problems, or a malfunctioning heater core.

3. How can I diagnose the OBDII code B048E in my 2014 Chevrolet Silverado?

- Diagnosing the OBDII code B048E in a 2014 Chevrolet Silverado may involve using a scan tool to retrieve the code, inspecting the auxiliary heater system components, and testing the heater control module for proper operation.

4. Can I still drive my 2014 Chevrolet Silverado with the OBDII code B048E present?

- It is not recommended to drive your 2014 Chevrolet Silverado with the OBDII code B048E present, as it indicates a malfunction in the auxiliary heater system that could affect heating performance and potentially lead to other issues.

5. What are some repair tips for fixing the OBDII code B048E in a 2014 Chevrolet Silverado?

- Repair tips for fixing the OBDII code B048E in a 2014 Chevrolet Silverado may include checking and repairing any damaged wiring, replacing the heater control module if necessary, and ensuring proper functioning of the entire auxiliary heater system.

6. Is the OBDII code B048E in a 2014 Chevrolet Silverado a serious issue?

- While the OBDII code B048E in a 2014 Chevrolet Silverado may not directly affect the vehicle's drivability, it is still important to address the issue promptly to prevent further complications with the auxiliary heater system.

7. Can resetting the OBDII code B048E in my 2014 Chevrolet Silverado make it go away permanently?

- Resetting the OBDII code B048E in a 2014 Chevrolet Silverado may temporarily clear the code, but if the underlying issue with the auxiliary heater system is not fixed, the code is likely to reappear.

8. How much does it typically cost to repair the OBDII code B048E in a 2014 Chevrolet Silverado?

- Repair costs for the OBDII code B048E in a 2014 Chevrolet Silverado can vary depending on the exact cause of the issue, but it may involve expenses for parts replacement, labor, and diagnostic fees.

9. Can a DIY enthusiast fix the OBDII code B048E in a 2014 Chevrolet Silverado?

- While some DIY enthusiasts may have the skills to address the OBDII code B048E in a 2014 Chevrolet Silverado, it is recommended to consult a professional mechanic for proper diagnosis and repair to ensure the issue is resolved correctly.

10. Will ignoring the OBDII code B048E in my 2014 Chevrolet Silverado cause further damage to the vehicle?

- Ignoring the OBDII code B048E in a 2014 Chevrolet Silverado may lead to decreased heating performance, discomfort in cold weather, and potentially more severe issues with the auxiliary heater system if left unresolved.