Lexus LS400 Oxygen Sensor
Common Causes of Lexus LS400 Oxygen Sensor Problems
Every component of your Lexus LS400 is specifically engineered to give you the best possible driving experience. One of these especially crafted parts is the oxygen sensor. Your Lexus LS400 oxygen sensor is tasked to regularly monitor and measure the oxygen level in the exhaust gases emitted by your engine so that the computer can adjust the air and fuel mixture accordingly. Maintaining the ideal air to fuel ratio is essential in achieving your Lexus' optimum driving power and acceleration, but doing this task constantly makes the oxygen sensor prone to rapid deterioration. Below are some of the most common problems encountered by Lexus LS400 oxygen sensors and their usual causes:
Decrease in fuel efficiency
A defective oxygen sensor will lead to a significant decline in your Lexus' fuel economy. When the oxygen sensor goes bad, the amount of air flow that enters the engine is reduced. This will result in an increase in the amount of gasoline used for combustion, which will obviously use up all the gasoline in your fuel tank in a shorter period. So before you end up with an empty wallet because of high fuel prices, have your broken stock replaced with a new Lexus LS400 oxygen sensor.
Increase in vehicle emissions
If your oxygen sensor fails, you might end up with a failing grade of "F" in your state's emissions test. The O2 sensor's inability to maintain the ideal ratio between the air and fuel will result in a rich or lean mixture. These two types of mixture indicate an imbalance in the fuel and air's combination in the engine, which will definitely lead to an increase in your vehicle's emissions level.
Poor engine performance
Driving your Lexus with a faulty oxygen sensor may cause the vehicle's top-notch engine to misfire or backfire. Apart from a sluggish response everytime you step on the accelerator, a rich or lean gas mixture caused by the oxygen sensor trouble will alter the normal "explosion" of the engine, which starts the combustion and processing of the gasoline. If you hear a deafening bang near the intake manifold, it means that your Lexus' engine backfired, and you are in for a really expensive, wallet-emptying engine repair.