AutoCodes – Pontiac – B0433 Pontiac

B0433 Pontiac 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 Pontiac 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 920

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

What does this mean?

What are the Possible Causes of the DTC B0433 Pontiac?

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 Pontiac?

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 Pontiac 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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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 Pontiac Code

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

Common symptoms include erratic temperature control, inconsistent heating or cooling, and a malfunctioning HVAC system.

2. What are the possible causes of OBDII code B0433 in a Pontiac indicating a Temperature Control #3 Feedback Circuit Malfunction?

Potential causes include a faulty temperature control sensor, wiring issues, a defective HVAC control module, or a malfunctioning blend door actuator.

3. How can I diagnose the OBDII code B0433 in my Pontiac when it points to a Temperature Control #3 Feedback Circuit Malfunction?

Diagnosis typically involves using a scan tool to retrieve the code, checking the temperature control sensor and related wiring for any faults, and testing the HVAC system components for proper functioning.

4. Can I continue driving my Pontiac with the OBDII code B0433 indicating a Temperature Control #3 Feedback Circuit Malfunction?

It is not recommended to drive the vehicle with this code present, as it can lead to further HVAC system issues and discomfort while driving.

5. How can I repair OBDII code B0433 in my Pontiac due to a Temperature Control #3 Feedback Circuit Malfunction?

Repair options may include replacing the faulty temperature control sensor, repairing any damaged wiring, recalibrating the HVAC control module, or replacing the blend door actuator if necessary.

6. Are there any DIY tips for addressing OBDII code B0433 in a Pontiac related to the Temperature Control #3 Feedback Circuit Malfunction?

DIY enthusiasts can start by checking fuses related to the HVAC system, inspecting wiring connections for any visible damage, and ensuring the temperature control sensor is securely in place.

7. Can a malfunctioning cabin air filter contribute to triggering OBDII code B0433 in a Pontiac?

While a clogged cabin air filter can affect HVAC performance, it is unlikely to directly cause the specific Temperature Control #3 Feedback Circuit Malfunction indicated by OBDII code B0433.

8. How long does it typically take to resolve OBDII code B0433 in a Pontiac related to the Temperature Control #3 Feedback Circuit Malfunction?

The repair time can vary depending on the exact cause of the issue, but it may take anywhere from 1 to 3 hours to diagnose and fix the problem.

9. Is it necessary to reset the OBDII system after repairing OBDII code B0433 in a Pontiac due to a Temperature Control #3 Feedback Circuit Malfunction?

Yes, it is recommended to clear the code and reset the OBDII system after completing the repairs to ensure the issue has been resolved and the system is functioning properly.

10. Can extreme weather conditions contribute to triggering OBDII code B0433 in a Pontiac related to the Temperature Control #3 Feedback Circuit Malfunction?

While extreme temperatures can impact HVAC system performance, they are unlikely to be a direct cause of the specific malfunction indicated by OBDII code B0433.