What does the P0073 fault code in the LaCrosse mean?

1 Answers
PatrickLynn
07/30/25 9:59am
LaCrosse P0073 fault code indicates a high circuit condition in the ambient air temperature sensor. Introduction to automotive fault codes: Automotive fault codes are error codes generated by the vehicle's ECU (Engine Control Unit) after analyzing malfunctions. Generally, these codes are caused by sensor failures or poor sensor performance, but some mechanical faults cannot be detected by the ECU. Function of automotive fault codes: During vehicle development, there is an increasing trend toward intelligence, mechanization, and automated control. This requires control units to autonomously assess the status of surrounding components and the environment as much as possible and quickly execute corresponding control functions. Control is a comprehensive decision-making process, and fault codes are essential conditions in the control logic, used to determine whether certain functions meet the control criteria.
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