Engine-Codes - Generic - B0433

B0433 Code - Temperature Control #3 Feedback Circuit Malfunction

- Code Popularity: 9,201 Views
- Repair Importance Level: 1/3
- Repair Difficulty Level: 2/3
Table of contents

|What are the Possible Causes of the B0433 Code?

  • 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 B0433 Code?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

|What is the cost to diagnose the B0433 code?

Labor: 1.0

The cost to diagnose the B0433 code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

|What are B0433 code possible symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

|What Does the B0433 Code Mean?

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.

Temperature Control #3 Feedback Circuit Malfunction

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|B0433 code information for specific makes

  • B0433 BUICK Temperature Control #3 Feedback Circuit Malfunction
  • B0433 CADILLAC Temperature Control #3 Feedback Circuit Malfunction
  • B0433 CHEVROLET Temperature Control #3 Feedback Circuit Malfunction
  • B0433 GMC Temperature Control #3 Feedback Circuit Malfunction
  • B0433 HUMMER Temperature Control #3 Feedback Circuit Malfunction
  • B0433 PONTIAC Temperature Control #3 Feedback Circuit Malfunction
  • B0433 SATURN Temperature Control #3 Feedback Circuit Malfunction

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