AutoCodesChevrolet – B3933 2016 Chevrolet Silverado

B3933 2016 Chevrolet Silverado Code - Air Conditioning Evaporator Temperature Sensor Circuit

Quick Answer

The air temperature sensors are a 2-wire negative temperature coefficient thermistor. Common causes include Faulty Air Conditioning Evaporator Temperature Sensor, Air Conditioning Evaporator Temperature Sensor harness is open or shorted, Air Conditioning Evaporator Temperature Sensor 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
B3933 2016 Chevrolet Silverado indicates Air Conditioning Evaporator Temperature Sensor Circuit.
Common causes
Common causes include Faulty Air Conditioning Evaporator Temperature Sensor, Air Conditioning Evaporator Temperature Sensor harness is open or shorted, Air Conditioning Evaporator Temperature Sensor 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 628
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 17, 2023
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Code B3933 2016 Chevrolet Silverado Description

The air temperature sensors are a 2-wire negative temperature coefficient thermistor. This sensor operates using signal and low reference circuits. As the air temperature surrounding the sensor increases, the sensor resistance decreases. The sensor is capable of reading temperatures ranging from -40 to +80°C (-40 to +176°F), with a signal voltage between 0-5 V. If the Heating, Ventilation, and Air Conditioning (HVAC) Control Module detects a malfunctioning sensor the software uses a default air temperature value. The default action ensures that the HVAC system can adjust the inside air temperature near the desired temperature until the condition is corrected. The Diagnostic Trouble Code (DTC) sets when the input signal is out of range. The HVAC Control Module detects a voltage greater than 4.9 V on the temperature signal circuit.
OBDII Code B3933 2016 Chevrolet Silverado - Air Conditioning Evaporator Temperature Sensor Circuit - AutoCodes.com
B3933 2016 Chevrolet Silverado Code - Air Conditioning Evaporator Temperature Sensor Circuit

What are the Possible Causes of the DTC B3933 2016 Chevrolet Silverado?

  • Faulty Air Conditioning Evaporator Temperature Sensor
  • Air Conditioning Evaporator Temperature Sensor harness is open or shorted
  • Air Conditioning Evaporator Temperature Sensor circuit poor electrical connection
  • Faulty Heating, Ventilation, and Air Conditioning (HVAC) Control Module

How to Fix the DTC B3933 2016 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 B3933 2016 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 B3933 2016 Chevrolet Silverado code?

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

Need Help with the Code?

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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 B3933 2016 Chevrolet Silverado Code

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

- Common symptoms include malfunctioning air conditioning, inconsistent cooling performance, and the AC system not responding to temperature adjustments.

2. What are the potential causes of OBDII code B3933 in a 2016 Chevrolet Silverado?

- Possible causes include a faulty evaporator temperature sensor, damaged wiring or connectors in the sensor circuit, or a problem with the HVAC control module.

3. How can I diagnose the issue causing OBDII code B3933 in my 2016 Chevrolet Silverado?

- Diagnosis involves using an OBDII scanner to retrieve the code, inspecting the wiring and connectors for damage, testing the evaporator temperature sensor, and checking the HVAC control module for any faults.

4. Can I still drive my 2016 Chevrolet Silverado with OBDII code B3933 triggered?

- It is generally safe to drive the vehicle with this code, but you may experience issues with the air conditioning system's performance until the problem is resolved.

5. Is it possible to reset OBDII code B3933 in a 2016 Chevrolet Silverado without repairing the issue?

- While you can clear the code with an OBDII scanner, it is recommended to diagnose and address the root cause of the problem to prevent further issues with the air conditioning system.

6. How much does it typically cost to repair OBDII code B3933 in a 2016 Chevrolet Silverado?

- Repair costs can vary depending on the exact cause of the issue, but you can expect to pay for sensor replacement, wiring repairs, or HVAC control module repair or replacement.

7. Are there any DIY tips for fixing OBDII code B3933 in a 2016 Chevrolet Silverado?

- DIY tips include checking for loose or damaged wiring, ensuring connectors are securely attached, and testing the evaporator temperature sensor with a multimeter.

8. Will fixing OBDII code B3933 improve the overall performance of my 2016 Chevrolet Silverado's air conditioning system?

- Yes, addressing this code should restore proper function to the air conditioning system, leading to consistent cooling and better overall comfort while driving.

9. How long does it typically take to repair OBDII code B3933 in a 2016 Chevrolet Silverado?

- Repair times can vary depending on the exact cause of the issue and the complexity of the repair needed, but it may take a few hours to a full day to complete the repair.

10. Can OBDII code B3933 in a 2016 Chevrolet Silverado be indicative of other underlying issues in the vehicle?

- While this code specifically relates to the air conditioning evaporator temperature sensor circuit, it is always a good idea to perform a thorough inspection of related components to ensure there are no additional problems affecting the vehicle.

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