Sometimes the light sensors on the dashboard of your car will go on and go off sporadically, causing you to be concerned about what is going on under the hood. This flickering of the check-engine light could mean a number of things, and you should investigate all of them to be sure your car isn't having mechanical problems.
Keep an Eye on It
Cars are incredibly complex machines, especially these days, as everything is programmed through chips and circuits. Sometimes there are glitches in the electronics, which cause sensor lights inside the car to come on, or faulty sensor switches that say something is wrong when really nothing is wrong. If the light comes on once and then goes off, keep an eye out for it, as sometimes a power surge within the electrical system within the car will trigger that light momentarily. In this case, nothing is wrong.
Is this check-engine light coming on and then going off at certain times, such as when it is raining, when you haven't changed your oil for an extended period of time or when it is very hot outside? These are all clues as to why this light is coming on, which you should take into account before coming to a conclusion.
Bring to Mechanic
If the pattern continues to happen, bring the car to a mechanic for diagnosis. Report the clues you have gathered. If the mechanic's diagnosis doesn't sound reasonable or sounds outrageously expensive, take the car to another mechanic and get a second or even third opinion. You may want to bring the car in, ask a mechanic to find out if there is a problem with the engine, without mentioning the sensor light, and see what he tells you. This is the best way to figure out if the problem is mechanical or just a faulty sensor or dashboard light.
Reasons for a Check Engine Light on a Lexus
Lexus benefits from parent company Toyota when it comes to engineering, reliability and diagnostics, and Toyota's warning systems monitored catalytic converter and...
How to Turn Off The Check Engine Light
The automotive computer is designed to recognize any abnormal signal indicating a failure of one of the components it operates. In response...
How to Reset the Service Light on a Volkswagen Passat
Some Volkswagen dealers would have Passat owners thinking they need to bring their cars to them for oil change services or purchase...
How to Check Engine Light Codes
Check Engine Light. Just those words send chills up ones spine. Wouldn't it be nice to be able to check what was...
How to Turn Off a Honda Check Engine Light
The check engine light in a Honda indicates that service is needed on the vehicle. Unfortunately, once the service is completed, the...
How to Reset Mazda MPV Check Engine Lights
The Mazda MPV was introduced in 1989. It has featured two types of powertrain control modules in the onboard diagnostic (OBD) phase....
How Do You Reset the Check Engine Light on a 2003 VW Passat?
The check engine light on your 2003 VW Passat comes on when there is a problem with the vehicle's emissions control system....
What Will Cause My Battery Light to Flicker?
The battery warning light in your vehicle turns on when you turn the ignition key to the "on" position. As soon as...
What to do When the Check Engine Light Stays on
Diagnostic trouble codes (DTCs) are regulated by sensors and electronically monitored circuits and valves. There are literally hundreds of reasons why a...
Check Engine Light on Dodge Caravan
The check engine light on your Dodge Caravan model is designed to warn of possible problems in one or more of the...