why is my check engine light on but car drives fine

Starts fine runs Most common cause of engine lights is either an air fault such as air flow meter or air mass sensor. Vibration or shaking may be caused by misfires poor fuel pressure or faulty spark plugs.

Why Is My Check Engine Light On Autozone

Glowing check engine light does not usually indicate an emergency but one should never ignore it for a longer time.

. Below are some of the more common explanations for a CEL. Common Check Engine Light Explanations. There are a couple of reasons why this may be.

Check engine light on or flashing in your car what it means and if you should worry DIY with Scotty Kilmer. Takes like 5mins-15 mins to reset. If there is a problem with the car its probably the O2 sensor.

Causes of a Flashing or Blinking Check Engine Light Misfires on one or several cylinders most common Faulty spark plugsCoils Faulty engine sensors coolant air temperature exhaust temperature sensor etc Faulty EGR valve Faultybad injectors Faulty crankshaftcamshaft sensor Exhaust emission problems Boostovercharging problems. Perhaps you forgot to tighten the gas cap. How to fix the check engine.

Yes something as simple as a loose gas cap or broken or missing gas cap can be the cause of your engine troubles. Untightened gas cap is the most common reason the check engine light is triggered. Possible causes of the check engine light to come on are.

Any electronic sensor or component on your vehicle that detects engine performance anomalies can cause the Check Engine Light to activate and a lack of communication with. Let me know if you need more info. A person can still drive a car even if the check engine light is on without experiencing any kind of problem but it is better to get the car checked as a glowing check engine light is not a good sign.

Defective Oxygen Sensor Mass Airflow Sensor MAF needs replacement Fuel Economy Spark PlugsPlug Wires are Faulty DamagedLoose Gas Cap Failing Ignition Coil Bad or Faulty Catalytic Converter Defective Oxygen Sensor. This is an extremely common problem with modern cars and a relatively easy one to fix. Check engin light stays on.

Your vehicles onboard computer flags this and turns on the service engine light to get your attention. The truth is that the check engine light comes on because one of many parts responsible for your tailpipe emissions has failed an internal test or is operating outside of accepted parameters. There are others but if the car is driving fine then most likely an air fault.

Its natural to be worried if the check engine light appears. Check the air sensor sometimes they just need a clean up rather than replacement. These problems can range from faults within the electrical system the engine fluid levels or to problems within the cars emissions systemThe 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.

A check engine light that turns when your car is running fine means there are problems in its electrical system or issues in its emission system. Though there are plenty of feasible and specific reasons for a check engine light to come on some issues are of course more common than others. There are several reasons as to why the check engine light is glowing but before.

Sometimes youll notice a check engine light even though the car runs fine. If your check engine light comes on and you have no symptoms the cars running fine your temperatures are. For filling the tank until it clicks your fine.

Depending on how much you drive with your gas light on. There are many symptoms that can contribute to a stalling and no start condition when driving. Gas Cap Is Loose.

The gas pump has a pressure sensor in it to tell it when it is full. If the light comes back on and your gas needle keeps dropping then im sure that you have a sensor problem. Top reasons why your check engine light is on.

Your tank should fill up to 10-12 gal.

The Check Engine Light Demystified Yourmechanic Advice