OE Quality
60-Day Returns

Standard Ignition AX433 HVAC Heater Core Temperature Sensor
Overview of Standard Ignition HVAC Heater Core Temperature Sensor AX433
The Standard Ignition HVAC Heater Core Temperature Sensor AX433 is designed to provide accurate temperature readings for the heating and cooling system in select Mazda vehicles. This sensor ensures proper HVAC system function by monitoring heater core temperature and relaying data to the vehicle’s control module.
- Connector Gender: Female
- Connector Quantity: 1
- Connector Shape: Rectangular
- Connector Type: Plug in
- Terminal Gender: Male
- Terminal Quantity: 2
- Terminal Type: Blade
- Compatible with Mazda 3, Mazda 6, CX-3, and CX-5 models
- Standard Ignition part number AX433
Detailed Product Description
This HVAC heater core temperature sensor from Standard Ignition features a female rectangular plug-in connector with a single connection point, designed for straightforward installation. The sensor terminals are male blade types, with two terminals to ensure reliable electrical contact. The sensor accurately measures the temperature of the heater core, allowing the vehicle’s HVAC system to regulate cabin temperature effectively. It is engineered to meet OEM specifications for Mazda 3, Mazda 6, CX-3, and CX-5 models, ensuring compatibility and performance.
Common Applications and Issues Addressed
- Helps maintain consistent cabin temperature by monitoring heater core heat levels
- Prevents HVAC system overheating or underheating due to faulty temperature readings
- Resolves issues with inconsistent or fluctuating interior climate control
- Addresses heater core sensor failure symptoms such as poor heater performance
- Supports proper HVAC system diagnostics and operation in Mazda 3, 6, CX-3, and CX-5 vehicles
Installation Notes and Tips
- Ensure the vehicle ignition is off before sensor replacement
- Disconnect the battery to prevent electrical shorts during installation
- Locate the heater core temperature sensor within the HVAC housing as per vehicle service manual
- Carefully unplug the female rectangular connector and remove the old sensor
- Install the new Standard Ignition AX433 sensor by plugging in the connector securely
- Verify proper connection of the two male blade terminals
- Test HVAC system operation after installation to confirm sensor functionality
Quality Assurance and Warranty
Standard Ignition manufactures the AX433 sensor to meet or exceed OEM standards for durability and performance. This sensor undergoes rigorous quality control to ensure reliable operation within the HVAC system. While specific warranty details may vary, Standard Ignition typically offers a limited warranty covering defects in materials and workmanship for this part.
| Brand | Standard Ignition |
| Part Number | AX433 |
| Connector Gender | Female |
| Connector Shape | Rectangular |
| Connector Type | Plug In |
| Contents | Sensor |
| Terminal Gender | Male |
| Terminal Type | Blade |
This part fits 18 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2019 | Mazda | 6 | N/A | |
| 2018 | Mazda | 3 | N/A | |
| 2018 | Mazda | 6 | N/A | |
| 2017 | Mazda | 3 | N/A | |
| 2017 | Mazda | 6 | N/A | |
| 2017 | Mazda | CX-3 | N/A | |
| 2017 | Mazda | CX-5 | N/A | |
| 2016 | Mazda | 3 | N/A | |
| 2016 | Mazda | 6 | N/A | |
| 2016 | Mazda | CX-3 | N/A | |
| 2016 | Mazda | CX-5 | N/A | |
| 2015 | Mazda | 3 | N/A | |
| 2015 | Mazda | 6 | N/A | |
| 2015 | Mazda | CX-5 | N/A | |
| 2014 | Mazda | 3 | N/A | |
| 2014 | Mazda | 6 | N/A | |
| 2014 | Mazda | CX-5 | N/A | |
| 2013 | Mazda | CX-5 | N/A |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.