AutoCodesChevrolet – B3933 2014 Chevrolet Silverado

B3933 2014 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 2014 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 459
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 2014 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 2014 Chevrolet Silverado - Air Conditioning Evaporator Temperature Sensor Circuit - AutoCodes.com
B3933 2014 Chevrolet Silverado Code - Air Conditioning Evaporator Temperature Sensor Circuit

What are the Possible Causes of the DTC B3933 2014 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 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 B3933 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 B3933 2014 Chevrolet Silverado code?

Need more information on how to fix the B3933 2014 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 B3933 2014 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code B3933 in a 2014 Chevrolet Silverado related to the Air Conditioning Evaporator Temperature Sensor Circuit?

- Common symptoms include inconsistent or ineffective air conditioning performance, unusual temperature readings on the climate control display, and potential intermittent operation of the AC system.

2. What are the possible causes of OBDII code B3933 in a 2014 Chevrolet Silverado?

- The code B3933 can be triggered by a faulty air conditioning evaporator temperature sensor, damaged wiring or connectors in the sensor circuit, or a malfunction in the HVAC control module.

3. How can I diagnose the issue related to OBDII code B3933 in my 2014 Chevrolet Silverado?

- To diagnose the problem, you can use an OBDII scanner to retrieve the specific trouble code, visually inspect the sensor and its wiring for any visible damage, and perform circuit testing to identify any electrical faults.

4. What are some repair tips for addressing OBDII code B3933 in a 2014 Chevrolet Silverado?

- Repair tips include checking and replacing the air conditioning evaporator temperature sensor if necessary, repairing any damaged wiring or connectors in the circuit, and resetting the trouble code with an OBDII scanner after completing the repairs.

5. Can I drive my 2014 Chevrolet Silverado with OBDII code B3933 related to the Air Conditioning Evaporator Temperature Sensor Circuit?

- It is generally safe to drive the vehicle with this code, but it is recommended to address the issue promptly to prevent further damage to the air conditioning system and ensure optimal comfort while driving.

6. How much does it typically cost to repair OBDII code B3933 in a 2014 Chevrolet Silverado?

- The cost of repair can vary depending on the specific cause of the issue. Replacing the air conditioning evaporator temperature sensor or repairing wiring may range from $100 to $300, while labor costs can add to the total expense.

7. Can I reset OBDII code B3933 in my 2014 Chevrolet Silverado without fixing the underlying issue?

- While you can reset the trouble code with an OBDII scanner, it is not recommended to clear the code without addressing the root cause, as the issue may persist and affect the performance of the air conditioning system.

8. What tools are needed to repair OBDII code B3933 related to the Air Conditioning Evaporator Temperature Sensor Circuit in a 2014 Chevrolet Silverado?

- Tools commonly used for this repair include an OBDII scanner for code retrieval and resetting, basic hand tools for sensor removal and installation, and a multimeter for circuit testing and diagnostics.

9. How long does it take to repair OBDII code B3933 in a 2014 Chevrolet Silverado?

- The repair time can vary based on the specific issue and the expertise of the person performing the repair. On average, addressing this code may take anywhere from 1 to 3 hours to complete.

10. Are there any recalls or technical service bulletins related to OBDII code B3933 in a 2014 Chevrolet Silverado?

- It is recommended to check with a Chevrolet dealership or refer to online databases for any relevant recalls or technical service bulletins related to the Air Conditioning Evaporator Temperature Sensor Circuit issue in the 2014 Silverado.

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