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Standard Ignition AX421 HVAC Heater Core Temperature Sensor
| Brand | Standard Ignition AX421 |
|---|---|
| Connector Gender | Female |
| Connector Shape | Square |
| Connector Type | Plug In |
| Contents | Sensor |
| Terminal Gender | Male |
| Terminal Type | Pin |
| Fits | Chrysler · 2 vehicles |
OE direct replacement. Ensures proper fit, form, and function for easier installation.
High-quality materials. Built to withstand extreme conditions for lasting durability.
Extensively tested. Delivers reliable performance and consistent operation.
Cross-references 68313478AA, ATSA347 and TS57548 for the same application. See all 4.
HVAC Heater Core Temperature Sensor for Rear Blower Control
Standard Ignition AX421 is a direct-fit HVAC heater core temperature sensor built for precise temperature feedback in the rear blower system. It is a fitment-based replacement for 2017 and 2019 Chrysler Pacifica rear blower applications, with OE-style form and connector layout for straightforward service.
Key Features
- Direct-fit OE replacement for HVAC temperature sensing
- Fits 2017 Chrysler Pacifica, rear blower
- Fits 2019 Chrysler Pacifica, rear blower
- Female square plug-in connector with 1 connector and 2-pin male terminals
- Built with materials selected for durability in demanding HVAC environments
- Tested for reliable signal performance and consistent operation
- Standard Ignition AX421 for service replacement and repair work
Detailed Description
Standard Ignition AX421 is an HVAC heater core temperature sensor used to monitor temperature in the rear blower circuit. The OE-style design supports proper fit, form, and function, which helps streamline replacement on Chrysler Pacifica HVAC systems. For technicians and owners searching for a Chrysler Pacifica rear blower temperature sensor, AX421 provides a direct replacement path with the correct connector style and terminal layout. This part cross-references 68313478AA for the same application.
Common Repair Symptoms
- Rear blower temperature readings that do not match cabin demand
- Inconsistent rear HVAC output in a Chrysler Pacifica
- Rear blower control faults tied to sensor signal issues
- Temperature-related HVAC performance problems after sensor failure
- Diagnostic trouble codes related to rear HVAC sensing
Installation Notes and Tips
Verify the connector shape, gender, and terminal configuration before installation. Confirm vehicle application by year and rear blower position on 2017 and 2019 Chrysler Pacifica models. Inspect the harness and connector for corrosion, bent terminals, or heat damage before installing the new sensor. Clear HVAC-related fault codes and confirm rear blower operation after replacement.
Quality Assurance
Standard Ignition manufactures this sensor with quality control maintained throughout the production process. The part is tested to support reliable performance and is built from materials intended to withstand harsh operating conditions in automotive HVAC service.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2019 | Chrysler | Pacifica | N/A | Rear Blower |
| 2017 | Chrysler | Pacifica | N/A | Rear Blower |
| No rows match your filter. | ||||