The P0073 trouble code indicates a high input issue within the ambient air temperature sensor circuit. This sensor is responsible for detecting the temperature of the air outside the vehicle. Problems with this sensor can affect various vehicle functions, including the air conditioning system and the engine’s performance.
Ambient Air Temperature Sensor Circuit High Input
Code symptoms P0073.
1. Inaccurate readings on the vehicle’s temperature display.
2. Issues with the air conditioning system.
3. Illuminated “Check Engine” or “Service Engine Soon” light on the dashboard.
This code is common in brands such as:: Chevrolet, Renault, Ford, Toyota, Nissan, Mercedes Benz, Honda.
Causes of the code P0073.
1. Faulty ambient air temperature sensor.
2. Wiring or connector issues within the sensor circuit.
3. Problems with the Engine Control Module (ECM).
Code Solutions P0073.
1. Inspect and replace the ambient air temperature sensor if it is faulty.
2. Check and repair any damaged wiring or connectors in the sensor circuit.
3. If ECM issues are suspected, consult a qualified technician for diagnosis and potential reprogramming or replacement.