Installed a K&N air filter on 2010 v 10. Check engine light is on showing a wrench. Is this a specific code?


I did not disconnect battery to do install. Did disconnect after to see if it affected light.


Test drove truck and it runs fine, see improved performance.

 

If you run to a local auto parts store they usally will test the code with a machine to see what the code could be! Installing a new air filter without D/Cing the battery shouldnt give you a code however!

 

Unless you have the codes read, it is impossible to guess why the light is on if there are no other symptoms. It could be as simple as a loose gas cap to a problem with your oiled air filter to any type of emissions-related fault.

There are dozens of parts and hundreds of possible codes that all may cause that little light to come on. Got get the codes read. WRITE THEM DOWN, do NOT rely on the parts store drone to interpret them. Do not write down the description or interpretation, write them down EXACTLY as displayed (Pxxxx) where xxxx is some string of numbers and sometimes letters.

The "butt dynamometer" is usually a self-fulfilling confirmation that you accomplished something, even if measurement by instrumentation proves you didn't. You "expect" an improvement, therefore you believe one has occurred.

 

General what i do is go get the codes than look them up online or post them in a topic like here! Best way to do! (Dont buy anything they try and sell you they are gnerally wrong in what they think you need!!!)