Standard Ignition AX378 Ambient Air Temperature Sensor

Ambient Air Temperature Sensor for Ford Transit

Standard Ignition AX378 is a direct-fit ambient air temperature sensor for select Ford Transit vans. It is built to match OE fit, form, and function, with materials selected for durability in demanding underhood and exterior conditions.

This ambient air temperature sensor helps the HVAC system and instrument display read outside air temperature accurately on Ford Transit-150, Transit-250, Transit-350, Transit-350 HD, and Transit models.

Key Features

• Direct-fit OE replacement for straightforward installation
• Black housing with oval plug-in connector
• Female connector with 2 male pin terminals
• Push-on attachment method
• Built with high-quality materials for long-term durability
• Tested for reliability and consistent performance
• Sensor only; wiring harness and mounting bracket are not included

Detailed Description

Standard Ignition AX378 ambient air temperature sensor is engineered for vehicles that rely on accurate outside temperature input for HVAC operation and driver information display. The sensor uses a single oval connector, push-on attachment, and OE-style electrical interface to support a clean replacement on the vehicle. For shoppers searching for a Ford Transit ambient air temperature sensor, AX378 provides a direct-fit solution for 2015-2023 Ford Transit-150, Transit-250, Transit-350, and Transit-350 HD, plus 2015-2017 Ford Transit applications.

This part cross-references Four Seasons 76082 for the same application.

What It Helps Fix

• Incorrect outside air temperature readings
• HVAC display errors tied to ambient temperature input
• Fault codes related to the ambient temperature sensor circuit
• Intermittent temperature readings caused by sensor wear or exposure
• Replacement needs after physical damage or connector failure

Installation Notes and Tips

Verify connector shape, terminal style, and mounting style before installation. AX378 uses a female oval plug-in connector with two male pin terminals and a push-on attachment method. Compare the original sensor location and electrical connection on the vehicle before replacing the part. For Ford Transit-150, Transit-250, Transit-350, and Transit-350 HD applications, confirm the existing sensor matches the OE-style interface shown here.

Quality Assurance

Standard Ignition states that this sensor is manufactured as a direct-fit OE replacement and undergoes extensive testing for reliability and performance. The part is produced with quality control maintained throughout the manufacturing process to support consistent fit and function.