HomeHVAC > SensorsStandard Ignition AX138 Ambient Air Temperature Sensor
Part #: AX138

Standard Ignition AX138 Ambient Air Temperature Sensor

⚙️ 18 vehicles fit this part
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Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Dodge and Chrysler, Caravan, Grand Caravan, Town & Country, Grand Voyager, and Voyager
🔄Easy Returns — Return within 60 days for a full refund
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Overview of Standard Ignition AX138 Ambient Air Temperature Sensor

The Standard Ignition AX138 Ambient Air Temperature Sensor is designed for precise temperature readings in Chrysler and Dodge vehicles. This sensor is compatible with models such as the Caravan, Grand Caravan, Grand Voyager, Town & Country, and Voyager, ensuring accurate HVAC system performance.

  • Attachment Method: Bolt on for secure installation
  • Color: Black housing for durability and corrosion resistance
  • Connector Gender: Female with one connector for easy plug-in connection
  • Connector Shape: Round and rectangular for proper fitment
  • Terminal Gender: Male with two blade terminals
  • Mounting Bracket Included for stable sensor placement
  • Wiring Harness Not Included

Detailed Product Description

The AX138 Ambient Air Temperature Sensor from Standard Ignition is engineered to provide reliable ambient temperature data to the HVAC system of select Chrysler and Dodge vehicles. Featuring a bolt-on attachment method, this sensor ensures a secure and stable fit. The black sensor housing is designed to withstand environmental factors, while the female connector with a single plug-in interface simplifies installation. The sensor includes a mounting bracket for proper positioning and uses two male blade terminals for electrical connection. This sensor is essential for maintaining accurate climate control and engine management functions in vehicles like the Dodge Grand Caravan and Chrysler Town & Country.

Common Applications and Problem Resolution

  • Helps resolve inaccurate cabin temperature readings
  • Prevents HVAC system malfunctions related to ambient temperature input
  • Addresses issues with automatic climate control not responding correctly
  • Eliminates false temperature sensor error codes
  • Supports engine control systems that rely on ambient air temperature data

Installation Notes and Tips

Installation of the Standard Ignition AX138 sensor requires a bolt-on attachment, ensuring a firm and reliable fit. The included mounting bracket should be used to secure the sensor in the designated location. Ensure the female connector is properly aligned with the vehicle’s wiring harness for a secure plug-in connection. Note that the wiring harness is not included and must be reused from the original sensor or sourced separately. Verify that the two male blade terminals are clean and free of corrosion before installation to maintain optimal electrical contact.

Quality Assurance and Warranty Information

Standard Ignition products are manufactured to meet or exceed OEM specifications for fit, form, and function. The AX138 Ambient Air Temperature Sensor undergoes rigorous quality control testing to ensure durability and reliable performance in Chrysler and Dodge vehicles. This part is backed by Standard Ignition’s limited warranty, providing coverage against defects in material and workmanship under normal use.

BrandStandard Ignition
Part NumberAX138
Attachment MethodBolt On
ColorBlack
Connector GenderFemale
Connector ShapeRound, Rectangular
Connector TypePlug In
ContentsSensor
Mounting Bracket(s) IncludedYes
Terminal GenderMale
Terminal TypeBlade
Wiring Harness IncludedNo

This part fits 18 vehicles. Search below:

YearMakeModelPositionNotes
2006DodgeCaravanN/AHVAC Automatic Temperature Control (ATC) Relay with Bracket
2006DodgeGrand CaravanN/AHVAC Automatic Temperature Control (ATC) Relay with Bracket
2005DodgeCaravanN/AHVAC Automatic Temperature Control (ATC) Relay with Bracket
2005DodgeGrand CaravanN/AHVAC Automatic Temperature Control (ATC) Relay with Bracket
2004ChryslerTown & CountryN/AHVAC Automatic Temperature Control (ATC) Relay with Bracket
2004DodgeCaravanN/AHVAC Automatic Temperature Control (ATC) Relay with Bracket
2004DodgeGrand CaravanN/AHVAC Automatic Temperature Control (ATC) Relay with Bracket
2003ChryslerTown & CountryN/AHVAC Automatic Temperature Control (ATC) Relay with Bracket
2003DodgeCaravanN/AHVAC Automatic Temperature Control (ATC) Relay with Bracket
2003DodgeGrand CaravanN/AHVAC Automatic Temperature Control (ATC) Relay with Bracket
2002ChryslerTown & CountryN/AHVAC Automatic Temperature Control (ATC) Relay with Bracket
2002DodgeCaravanN/AHVAC Automatic Temperature Control (ATC) Relay with Bracket
2002DodgeGrand CaravanN/AHVAC Automatic Temperature Control (ATC) Relay with Bracket
2001ChryslerGrand VoyagerN/A
2001ChryslerTown & CountryN/A
2001ChryslerVoyagerN/A
2001DodgeCaravanN/AHVAC Automatic Temperature Control (ATC) Relay with Bracket
2001DodgeGrand CaravanN/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:

4685803AB5S698172-478475963ATSB10002TS57262WT5574

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.