Can a K&N product cause my Check Engine Light or Service Light to come on?
A properly installed K&N product should not cause the Service Light to illuminate. The service light is a warning from the car’s computer that something appears abnormal with the car. It does not always mean something is, in fact, wrong with the car and some conditions can cause a false warning. A Service Light can be triggered because the engine is sensing denser air than it expects based on ambient conditions and expected restriction. In that instance, it would trigger a code signifying a MAF sensor error or lean condition because the ECM is reading air density outside the range it is expecting. These codes can mean either there is a leak in the air delivery system that needs to be fixed; or the MAF sensor needs replacing; or it may be a false warning when in fact nothing is wrong. In the unlikely event you experience a Service Light going off within the first week of installing a K&N High Flow air filter, contact our customer service department and we will help you resolve the issue
