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The check engine light illuminates when your vehicle’s computer believes there is a problem that could affect — or is affecting — your car’s emissions control system. When the light comes on, one or more diagnostic trouble codes are stored in the car’s computer. These lights illuminate when a routine service is due.
What is the most common reason for check engine light?
Replacing a faulty oxygen sensor — a sensor used to optimize a vehicle’s fuel-to-air mixture to increase gas mileage and reduce emissions — is the most common cause for a check engine light.
Is it safe to drive with check engine light on?
Can you drive a car with the engine light on? It’s okay to drive for a few miles, but be sure to schedule an inspection of the engine as soon as possible. If the check engine light comes on while you’re driving, don’t panic! Just be sure to have your car inspected as soon as possible after the light turns on.
Why is my engine light on but nothing seems wrong?
Normally, the appearance of a check engine light indicates a problem somewhere in your vehicle, but nothing seems amiss. The problem can even be as simple as forgetting to tighten your gas cap – in fact, this is the most common reason why check engine lights appear in the first place.
How do you fix a check engine light?
If the check engine light comes on, here are some tips on what you should do: Look for a serious problem that requires immediate attention. Try tightening your gas cap. Reduce speed and load. Use built-in diagnostic services, if available.
When should I be worried about check engine light?
Unlike a Temperature or Oil Pressure light, a Check Engine light is usually not an urgent, “Stop right now or you may cause permanent damage!” type of situation, unless it is flashing. If your gas cap is loose or the seal is not tight, the vapor leakage can cause your fuel system to trigger the check engine light.
Can engine light come on for no reason?
The check engine light can come on for many reasons. For example, something as simple as a loose gas cap can trigger the warning. And major problems, such as failed internal engine components, can turn on the light, as well.
What does a solid check engine light mean?
A solid Check Engine Light can mean something like a loose gas cap, or it can indicate a more in-depth problem like a fuel, timing, or transmission issue. Get your car diagnosed, although the urgency isn’t the same as if the light was flashing at you.
Can AutoZone check engine light?
Does AutoZone Scan Check Engine Lights? AutoZone can diagnose Check Engine Light codes, yes. If your engine light turned on and you are wondering why, head down to your local AutoZone where one of our store associates can help diagnose the issue through our free Fix Finder service.
How much does it cost to fix engine light?
The costs to fix whatever’s ailing your car — and causing the light to come on — can vary greatly. Repair costs for the most common check engine light problems range from under $20 to almost $1,200, according to CarMD’s analysis of millions of repairs recommended in 2016 in the U.S.
Will check engine light reset itself?
Your car’s check engine light will reset itself after you repair the problem in most car models. But it may take some time. A car usually needs 10-20 successful cycles before it will reset the check engine light by itself. Therefore it’s much easier to reset the check engine light with an OBD2 scanner.
Will a dealership buy my car if the check engine light is on?
Most dealerships will use the check engine light malfunction as an excuse to pay you less than the car may be worth. Be ready for a very low offer for the trade in. Your research will show the dealer you will not be taken advantage of.
How many miles after check engine light clears?
So why is the light still on? Here’s something you probably don’t know: after clearing the car’s computer you will need to drive for about 50 to 100 miles. As you drive your car the computer will monitor all the sensors and register the results.
How long does a check engine light take to reset?
The Light Stays On You may think that there is still a problem with the car after the repair, but it’s because the light needs time to reset. The car’s internal computer only resets after a set period where it checks all of its sensors once more. The reset can happen automatically after around 10 to 20 cycles.
How long do you have to drive to reset engine light?
To make sure the check engine light does not reappear, it’s recommended that you drive your car 30 to 100 miles. This enables the vehicle’s “Drive Cycle” to reset, as the various sensors need time to recalibrate.
What should you not say to a car salesman?
10 Things You Should Never Say to a Car Salesman “I really love this car” “I don’t know that much about cars” “My trade-in is outside” “I don’t want to get taken to the cleaners” “My credit isn’t that good” “I’m paying cash” “I need to buy a car today” “I need a monthly payment under $350”.
