Why Is My Lexus Check Engine Light On?

Sterling McCall Lexus Clear Lake welcomes you to discover why your Lexus check engine light is on.

The check engine light warns drivers of potential engine problems or failure. There are many reasons your check engine warning light may come on. It may be anything from a simple sensor failure, an alert to schedule preventive maintenance, or even to be looking for potentially significant issues that might cause engine failure. So, even if the check engine light turns on, it may not be a complete disaster. However, when your check engine warning light comes on, we suggest bringing it to us for a thorough inspection as quickly as possible. Even if nothing seems broken, getting it diagnosed can be the difference between needing to replace your engine and a simple fix.

The Gas Cap is Failing

Something as basic as forgetting to replace your gas cap or not tightening it completely may cause a check engine light. The vehicle’s gas cap will probably need to be changed during your ownership. After 50,000 miles, you should consider replacing a gas cap. If you feel you should replace your gas cap, we highly recommend genuine OEM replacement parts. Parts from big box stores can work in an emergency, but nothing beats parts from the manufacturer.

O2 Sensors in Your Car are Failing

There are sensors that feed info to your engine to help it run more efficiently. However, incorrect sensor readings from components like the MAF sensor or the O2 sensors can cause a check engine warning light to come on. If the vehicle seems normal, an old O2 sensor is the likely reason. In this situation, it might mean that your car is fine, but because the engine isn’t getting the data, it triggers the warning light. Even if your car feels normal, you should get it diagnosed immediately to rule out any potential larger issues.

Spark Plugs in Your Car are Old

Spark plugs are essential to the efficiency of your vehicle’s engine. As the name implies, spark plugs provide a small spark of electricity that ignites the fuel and causes your engine to run. Spark plugs have exact tolerances for peak performance, and if the spark plug setup is too large, it could possibly trigger a check engine warning light. Symptoms of faulty spark plugs include lower MPG rates, slower acceleration, and an engine that just will not run smoothly.

Schedule Lexus Service In Houston

Sterling McCall Lexus Clear Lake is one of the most trusted places for engine repair in the Houston area. We happily service all vehicle makes and models. One of our factory-trained technicians will inspect your vehicle for any necessary repairs and suggest the best resolution for you and your vehicle. Schedule your Lexus service in person or online today.