What is the meaning of OBD-II code P0175, and what are the possible causes and solutions for this code to be generated?

The P0175 code indicates that the Engine Control Module has detected an imbalance in the air-fuel ratio, where there is too much fuel and not enough oxygen, causing the engine to consume more gas and potentially not run at all. The optimal air-fuel ratio for gasoline engines is 14.7:1 for maximum power and efficiency during the combustion process. There are several possible causes for a P0175 code, such as: -A fuel injector that is blocked, jammed, or leaking -A malfunctioning fuel control valve -A contaminated or defective airflow measurement sensor -A malfunctioning engine coolant temperature sensor -A malfunctioning temperature-regulating device -The engine control module requires re-calibration -A contaminated or defective oxygen monitoring device -A leak in the vacuum system -An issue with the fuel supply -Incorrect fuel force measurement To diagnose the problem, a mechanic will typically check fuel pressure, inspect fuel injectors, examine fuel lines and vacuum lines, inspect oxygen sensors, and use a scan tool to compare engine temperature readings. The solution to the P0175 code may vary, but common fixes include replacing damaged vacuum lines, cleaning or replacing oxygen sensors and mass air flow sensor, reprogramming the ECM, and replacing the fuel pump, filter, and any damaged fuel lines, as well as fixing any faulty fuel injectors, thermostats, and coolant temperature sensors. Verify the vehicle's cooling system for proper function. Running abnormally cool will cause the engine to run in a rich condition due to the ECM design and faulty coolant temperature sensor or stuck thermostat.