Updated Control Module to Correct False Check Engine Light on Kia Rio. Today, we’ll tell you the most common reasons your Mazda Check Engine light is on, and how you can remedy the situation! All these so-called mechanics did was do everything but replace the cat. The plastic connector or gasket could also crack or fail. When your vehicle's onboard computer detects something is not right, it illuminates the light. In short, you need a new cat converter… and you’re being “snowed”, as we say in New England… wicked-bad snowed as they say in Boston. Most of drivers feel annoying when they see the Check Engine Light still turn of even the car problem was solve. Found on the instrument panel of most automobiles, it usually bears the legend engine , [1] check engine , service engine soon , maintenance required , emmiss maint , [2] or a pictogram of an engine—and when illuminated, it is typically an amber or red … Locating the leak, however, can be a problem, especially if it is a very small leak. My guess, the cat needs to be replaced. It can have a major impact on the vehicle’s safe operation. Remove the gas cap and make sure the cap and gasket are intact. Although a problem with the gas cap poses little risk to the vehicle, it increases the amount of pollutants released into the air. The second-most common cause for a false “check engine” light is also the easiest to resolve, but it’s also one that is the most frequently overlooked. The owner’s manual that came with the vehicle should have complete details on where each sensor is located as well as the part number. I wouldn’t recommend ignoring the CEL and leaving it on, b/c if later something else serious occurs with the engine or transmission, a problem that might damage the powertrain quickly, you may not notice it happening. Popularity Contest Part 2: Top Selling Cars in Europe, The 5 Most Interesting Car Museums in America, 5 Common Signs that Your Fuel Pump is Failing, Feature: 2017 Acura RDX – The Only SUV that You Need, How to Pass a Vehicle Safety and Emissions Inspection, The Real Difference Between Police Cars and Regular Cars, What to do When You Accidentally Lock Keys Inside Your Car. These sensors measure the ratio of unburned oxygen to fuel to determine whether the ratio is providing optimal efficiency. It could indicate a major problem that requires stopping the vehicle immediately to avoid a costly engine repair. A personal choice that I support your right to make, but not one I’d recommend to others. Anytime the check engine light is on your dashboard, it’s something to be taken seriously. Just hop on an ride worry free as long as there is oil in engine, gas in the tank, and air in the tires. Unfortunately, they are the only two the dealer covers under warranty. I’m curious. How does he claim to have cleaned the cat converter? How does he claim to know how clean it is inside the canister where the real chemical magic is performed? The o2 sensor involvement is b/c the ECM checks the cat operation by comparing the readings of pre cat o2 sensor to a post cat o2 sensor. Even though it’s often recommended to replace spark plugs at least every 30,000 miles, lots of vehicles today have platinum tipped spark plugs that last substantially longer, up to 100,000 miles. The whole purpose of the check engine light is to illuminate whenever there is a problem. Though often overlooked, your catalytic converter is a vital part of your engine’s performance. 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2020 false check engine light