AutoCodes – Chevrolet – B0433 Chevrolet

B0433 Chevrolet Code - Temperature Control #3 Feedback Circuit Malfunction

Quick Answer

The actuators operate using 5 circuits. Common causes include Faulty Auxiliary Air Temperature Actuator, Auxiliary Air Temperature Actuator harness is open or shorted, Auxiliary Air Temperature Actuator 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: B0433 Chevrolet indicates Temperature Control #3 Feedback Circuit Malfunction.
Common causes: Common causes include Faulty Auxiliary Air Temperature Actuator, Auxiliary Air Temperature Actuator harness is open or shorted, Auxiliary Air Temperature Actuator 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 9,195

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 Mar 11, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B0433 Chevrolet Description

The actuators operate using 5 circuits. A 5-volt reference, low reference, signal circuit and two bi-directional 0 or 12 volt control circuits. The Heating, Ventilation, and Air Conditioning (HVAC) Control Module supplies a low reference and 5-volt reference to the potentiometer. The HVAC control module monitors the voltage drop across the potentiometer on the door position signal circuit. As the actuator door changes position the door position signal circuit voltage also changes. The two bi-directional control circuits enable the actuator to operate. Both circuits are set to 0 volts when the HVAC control module detects, from the feedback potentiometer, that the actuator is in the desired position. In order to move the actuator, the HVAC control module switches the appropriate control circuit to 12 volts.

OBDII Code B0433 Chevrolet - Temperature Control #3 Feedback Circuit Malfunction - AutoCodes.com — B0433 Chevrolet Code - Temperature Control #3 Feedback Circuit Malfunction

What does this mean?

What are the Possible Causes of the DTC B0433 Chevrolet?

Faulty Auxiliary Air Temperature Actuator
Auxiliary Air Temperature Actuator harness is open or shorted
Auxiliary Air Temperature Actuator circuit poor electrical connection
Faulty Auxiliary Heating and Cooling Systems (HVAC) Control Module

How to Fix the DTC B0433 Chevrolet?

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 B0433 Chevrolet 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.

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Need more information on how to fix the B0433 Chevrolet code? Get Access to Factory Service Manuals

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Get the B0433 Chevrolet 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 B0433 Chevrolet Code

1. What are the common symptoms of OBDII code B0433 in a Chevrolet related to Temperature Control #3 Feedback Circuit Malfunction?

- Common symptoms include inconsistent temperature control in the vehicle's HVAC system, a malfunctioning heater or air conditioning system, and potential issues with the climate control module.

2. What are the possible causes of OBDII code B0433 in a Chevrolet?

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

3. How can I diagnose the Temperature Control #3 Feedback Circuit Malfunction in my Chevrolet related to OBDII code B0433?

- Diagnosis typically involves using a scan tool to read the code, testing the temperature control feedback sensor, inspecting the wiring and connectors for damage, and checking the operation of the HVAC system.

4. Can I continue driving my Chevrolet with OBDII code B0433 triggered?

- It is generally safe to drive the vehicle with this code, but it is important to address the underlying issue as soon as possible to prevent further damage to the HVAC system.

5. What are some repair tips for fixing OBDII code B0433 in a Chevrolet?

- Repair tips may include replacing the temperature control feedback sensor, repairing any damaged wiring or connectors, resetting the climate control module, or seeking assistance from a professional mechanic for a thorough diagnosis and repair.

6. Is it possible to reset the OBDII code B0433 in a Chevrolet without fixing the underlying issue?

- While clearing the code may temporarily turn off the check engine light, it will not resolve the underlying problem causing the Temperature Control #3 Feedback Circuit Malfunction and may result in the code reappearing.

7. How much does it typically cost to repair OBDII code B0433 in a Chevrolet?

- The cost of repair can vary depending on the specific issue causing the code, the labor rates of the mechanic, and the cost of any replacement parts needed. It is recommended to obtain quotes from different repair shops for an accurate estimate.

8. Can extreme weather conditions affect the triggering of OBDII code B0433 in a Chevrolet?

- Extreme temperatures or humidity levels can potentially impact the operation of the HVAC system and feedback circuit, leading to the triggering of this code. It is important to keep the vehicle well-maintained to minimize such issues.

9. Are there any preventive maintenance steps I can take to avoid OBDII code B0433 in my Chevrolet?

- Regularly servicing the HVAC system, checking the condition of wiring and connectors, and addressing any temperature control issues promptly can help prevent the triggering of this code in your Chevrolet.

10. How long does it usually take to repair OBDII code B0433 in a Chevrolet?

- The repair time can vary depending on the complexity of the issue causing the code and the availability of parts. Simple fixes like sensor replacement may take a shorter time, while more extensive repairs could require more labor hours.