AutoCodes – Saturn – B0433 Saturn

B0433 Saturn 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 Saturn 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 1,311

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

What does this mean?

What are the Possible Causes of the DTC B0433 Saturn?

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 Saturn?

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 Saturn 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 B0433 Saturn code?

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

Need Help with the Code?

Get the B0433 Saturn 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 Saturn Code

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

- Common symptoms include erratic temperature control, inconsistent heating or cooling, and potential issues with the climate control system.

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

- Possible causes include a faulty temperature control sensor, damaged wiring or connectors in the feedback circuit, or issues with the climate control module.

3. How can I diagnose the Temperature Control #3 Feedback Circuit Malfunction in my Saturn?

- Diagnosing this issue typically involves using an OBDII scanner to retrieve the specific trouble code, checking the temperature control sensor, inspecting wiring for damage, and testing the climate control module.

4. Can I drive my Saturn with the B0433 trouble code present?

- It is generally safe to drive the vehicle with this code, but it is recommended to address the issue promptly to avoid potential discomfort or further damage to the climate control system.

5. How can I repair OBDII code B0433 in my Saturn?

- Repair options include replacing the temperature control sensor, repairing or replacing damaged wiring or connectors, or addressing any issues with the climate control module as necessary.

6. Are there any DIY tips for fixing the Temperature Control #3 Feedback Circuit Malfunction in a Saturn?

- While some simple checks like inspecting wiring connections can be done by DIY enthusiasts, it is recommended to consult a professional mechanic for a thorough diagnosis and repair to ensure the issue is properly resolved.

7. Will resetting the trouble code make the issue go away permanently?

- Resetting the trouble code may temporarily clear the warning light, but if the underlying issue causing the malfunction is not fixed, the code is likely to reappear.

8. Can extreme weather conditions affect the occurrence of OBDII code B0433 in a Saturn?

- Extreme temperatures or environmental conditions can potentially exacerbate issues with the temperature control system, leading to the manifestation of the B0433 trouble code.

9. How long does it typically take to repair the Temperature Control #3 Feedback Circuit Malfunction in a Saturn?

- The repair time can vary depending on the exact cause of the issue and the extent of the repairs needed. It is advisable to consult a mechanic for an accurate estimate of the repair duration.

10. Is it necessary to have the trouble code cleared after repairing OBDII code B0433 in a Saturn?

- Clearing the trouble code after the repair is essential to reset the system and ensure the issue has been successfully resolved. This step can be performed by a mechanic or using an OBDII scanner.