- Function and benefit Replacing a faulty O2 sensor keeps the engine continuously monitored and running efficiently, helping maximize overall performance. - Compatibility Hyundai models: Accent, I10, I20, I30, I40, Ix20, Ix35, 2007-2020. - Problem addressed A defective or sluggish oxygen sensor can cause reduced engine performance and degraded drivability. - Replacement advantages Replacing a defective oxygen sensor is the most effective way to control the combustion process and restore proper engine management. - Use scenarios 1) After diagnostic indicates an O2 sensor fault, replace the sensor to restore proper air-fuel balance, improve throttle response, and regain fuel efficiency. 2) For Hyundai Accent, I10, I20, I30, I40, Ix20, or Ix35 vehicles from 2007 to 2020, perform sensor replacement as part of routine maintenance to maintain engine performance and emission control. 3) On aging Hyundai models showing signs of reduced power or higher emissions, replace the O2 sensor to reestablish correct combustion and smoother operation.