P0073Low SeverityEngine

Ambient Air Temperature Sensor Circuit High

What This Means

The ambient air temperature sensor is reading an unusually high voltage, indicating an open circuit or that the sensor is reporting extremely cold temperatures.

Common Symptoms

Reads very low temperature
Climate control issues
Check engine light on
A/C may not engage

Common Causes

Open circuit in wiring
Failed sensor (open)
Disconnected connector
Broken wire
Corroded pins

Estimated Repair Cost

$50 – $200

Parts and labor (varies by vehicle and location)

Difficulty:Easy

Need This Fixed?

Find certified mechanics near you who can diagnose and repair P0073.

Find a Shop Near You

Search Another Code

For informational purposes only. Diagnostic trouble codes are starting points for diagnosis, not definitive answers. Always consult a certified mechanic for proper diagnosis and repair. Estimated costs vary by vehicle, location, and shop rates.