Engine-Codes.com
Engine-Codes – GMC – B3933 2016 GMC Sierra

B3933 2016 GMC Sierra Code - Air Conditioning Evaporator Temperature Sensor Circuit

Quick Answer

The B3933 diagnostic trouble code (DTC) for a 2016 GMC Sierra indicates a problem with the air conditioning evaporator temperature sensor circuit. Common causes include Faulty evaporator temperature sensor, Wiring or connector issues in the sensor circuit, Corrosion or damage to the sensor or its connections. 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
B3933 2016 GMC Sierra indicates Air Conditioning Evaporator Temperature Sensor Circuit.
Common causes
Common causes include Faulty evaporator temperature sensor, Wiring or connector issues in the sensor circuit, Corrosion or damage to the sensor or its connections.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 14, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
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

Code B3933 2016 GMC Sierra Description

The B3933 diagnostic trouble code (DTC) for a 2016 GMC Sierra indicates a problem with the air conditioning evaporator temperature sensor circuit. This sensor is responsible for monitoring the temperature of the air conditioning system's evaporator core, which helps regulate the cooling process inside the vehicle. When this sensor circuit malfunctions, it can lead to issues with the air conditioning system's performance, potentially causing discomfort for the vehicle occupants.

OBDII Code B3933 2016 GMC Sierra - Air Conditioning Evaporator Temperature Sensor Circuit
B3933 2016 GMC Sierra Code - Air Conditioning Evaporator Temperature Sensor Circuit

Common Causes of B3933 2016 GMC Sierra

  1. Faulty evaporator temperature sensor.
  2. Wiring or connector issues in the sensor circuit.
  3. Corrosion or damage to the sensor or its connections.
  4. Electrical issues within the air conditioning system.
  5. Software or programming errors related to the sensor circuit.

Symptoms of B3933 2016 GMC Sierra

  1. Inconsistent cooling performance from the air conditioning system.
  2. Unusual temperature fluctuations inside the vehicle.
  3. Air conditioning system blowing warm air instead of cold air.
  4. Malfunction indicator light (MIL) illuminated on the dashboard.

How to Fix B3933 2016 GMC Sierra

  1. Begin by diagnosing the specific cause of the issue using a diagnostic scanner to retrieve the trouble codes and pinpoint the problem.
  2. Inspect the evaporator temperature sensor, wiring, and connectors for any signs of damage, corrosion, or loose connections.
  3. Replace the faulty sensor if necessary, ensuring proper installation and connection to the sensor circuit.
  4. Clear the DTCs from the vehicle's computer system to reset the air conditioning system and ensure proper functionality.
  5. Test the air conditioning system to verify that the issue has been resolved and that the sensor circuit is operating correctly.

Cost to Fix B3933 2016 GMC Sierra

The typical repair costs for addressing a B3933 DTC related to the air conditioning evaporator temperature sensor circuit in a 2016 GMC Sierra can vary depending on the specific cause of the issue. In general, the cost of replacing the sensor itself can range from $50 to $150, while additional costs for labor and diagnostic time may bring the total repair expenses to approximately $150 to $300. It's important to note that labor rates at auto repair shops can vary based on location and other factors, so it's advisable to check with local shops for a more accurate estimate.

Need more information about the B3933 2016 GMC Sierra code?

Need more information on how to fix the B3933 2016 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B3933 2016 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 B3933 2016 GMC Sierra Code

1. What are the common symptoms of OBDII code B3933 in a 2016 GMC Sierra related to the Air Conditioning Evaporator Temperature Sensor Circuit?

The common symptoms include poor air conditioning performance, incorrect temperature readings on the AC system, and potential issues with the climate control system.

2. What are the possible causes of OBDII code B3933 in a 2016 GMC Sierra?

Possible causes of this code include a faulty evaporator temperature sensor, damaged wiring or connectors in the sensor circuit, or issues with the climate control module.

3. How can I diagnose the Air Conditioning Evaporator Temperature Sensor Circuit issue in my 2016 GMC Sierra?

Diagnosing this issue typically involves using a scan tool to read the OBDII code, testing the evaporator temperature sensor for proper operation, and checking the wiring and connectors for any damage or corrosion.

4. Can I still drive my 2016 GMC Sierra with OBDII code B3933 related to the Air Conditioning Evaporator Temperature Sensor Circuit?

While it is possible to drive the vehicle with this code, it is recommended to address the issue promptly to prevent further damage to the air conditioning system and ensure optimal performance.

5. How can I repair OBDII code B3933 in my 2016 GMC Sierra?

Repairing this code may involve replacing the faulty evaporator temperature sensor, repairing or replacing damaged wiring or connectors, or resetting the climate control module after resolving the issue.

6. Is it safe to reset the OBDII code B3933 in my 2016 GMC Sierra without fixing the underlying issue?

Resetting the code without addressing the root cause may temporarily clear the warning light, but the issue will likely reoccur, impacting the air conditioning system's performance.

7. Can extreme temperatures or environmental conditions trigger OBDII code B3933 in a 2016 GMC Sierra?

Extreme temperatures or environmental conditions can potentially affect the evaporator temperature sensor's accuracy, leading to false readings and triggering the OBDII code.

8. How much does it typically cost to repair OBDII code B3933 related to the Air Conditioning Evaporator Temperature Sensor Circuit in a 2016 GMC Sierra?

The cost of repairing this code can vary based on the specific issue, with expenses ranging from a few hundred to over a thousand dollars, depending on the parts and labor required.

9. Are there any preventive maintenance steps I can take to avoid OBDII code B3933 in my 2016 GMC Sierra?

Regularly inspecting and servicing the air conditioning system, checking the sensor circuit for any signs of wear or damage, and addressing any issues promptly can help prevent the occurrence of this OBDII code.

10. Will OBDII code B3933 in a 2016 GMC Sierra affect the vehicle's overall drivability?

While this code specifically relates to the air conditioning system, addressing it promptly is recommended to ensure optimal vehicle performance and comfort for the occupants.

Discuss the causes and fixes for B3933 2016 GMC Sierra OBDII Code

Submit a New Comment

Code B3933 2016 GMC Sierra comments

No comments found for this page.