Standard Ignition AX426 HVAC Heater Core Temperature Sensor

HVAC Heater Core Temperature Sensor for Civic

Standard Ignition AX426 is an HVAC heater core temperature sensor built for direct-fit service on select Honda Civic models. It uses a female rectangular plug-in connector with two male pin terminals and includes a seal kit for the sensor connection.

Fits 2016-2019 Honda Civic, N/A. This Standard Ignition AX426 sensor is a practical replacement when the heater core temperature signal needs to be restored for proper HVAC control.

Key Features

• HVAC heater core temperature sensor for select Honda Civic applications
• Female connector with rectangular plug-in design
• 2 male pin terminals for the electrical interface
• Seal kit included for the connector area
• Standard Ignition AX426 for service replacement use

Product Details

The AX426 is used in the HVAC system to monitor heater core temperature and send the signal needed for climate control operation. Its connector design includes one female rectangular plug-in connection with two male pins, helping match the original electrical interface on supported vehicles. This part cross-references ATSB10042 for the same application.

For buyers searching for a Honda Civic heater core temperature sensor, HVAC temperature sensor replacement, or Standard Ignition AX426 fitment, this part covers 2016-2019 Honda Civic models. It is also listed under interchange references 80569TBAA11 and TS57553.

Common Issues It May Solve

• Incorrect heater core temperature signal to the HVAC control system
• Loss of stable cabin temperature regulation
• Faulty sensor connection at the heater core circuit
• HVAC performance concerns tied to temperature feedback

Installation Notes and Tips

Verify connector shape, terminal style, and vehicle fitment before installation. Confirm the sensor location and inspect the seal area during replacement to help maintain a secure electrical connection. Use the vehicle application data to match this part to 2016-2019 Honda Civic models, and compare the original connector to the AX426 before service.

Quality Assurance

Standard Ignition supplies service parts for automotive electrical and HVAC applications, and AX426 is built to match the listed connector and terminal configuration for the confirmed Honda Civic fitment.