Q: Q: My Check Engine Light is on and will not turn off

asked by on

Check engine light is on. I installed a cold air intake a few years ago. Some time later my check engine light would go on and then turn off after a while. Now it is always on. I noticed some engine oil contamination aparently being vacuumed through the PCV line connecting to the cold air intake and going into the throttle body. Is it possible this might have set the check engine light on? Would an Oil Catch Can help in solving this issue?

My car has 125000 miles.
My car has an automatic transmission.

It is possible that the recirculation of the oil back into the intake could be causing an issue, if the amount is excessive. However, without reading any troubleshooting codes, there would be no way to confirm why the Check Engine Light is illuminated; the Check Engine Light can come on for any number of reasons. The first thing that you are going to need to do is use a scanner to pull the codes from your vehicle’s computer and see what they indicate. If you need assistance with this, you can always contact a certified technician, such as one from YourMechanic, to diagnose the reason for your illuminated Check Engine Light.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Q: My Check Engine Light is on and will not turn off

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: P0001code on scanner 2004 diesel

Hi there. The code P0001 is coming up for the fuel pressure regulator. Check the fuel pressure regulator for any corrosion on the harness and if the regulator is leaking. There could be an issue with the wiring from the...

Q: my car is having Weird cranking, grinding noise at start for few seconds when my car is cold

Is the grinding noise coming from the starter as it is being turned, or from the engine when it is starting up? The starter will grind when it is improperly installed, or it is broken and the gears are not...

Q: Oil consumption. Burning oil. Oil light turns up on idle.

Hi there, thanks for writing in. The valve stem seals are the most common cause of this on your engine. When they fail, it requires that the cylinder heads be removed and rebuilt to fix it. The piston rings can...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...