My K&N Has Been Blamed For a Mass Air Flow Sensor Failure – What Should I Do?
In the unlikely event an automotive dealership or other service provider
develops a belief that a K&N Air Filter has caused a problem with your
vehicle, rest assured that K&N stands behind our products. If a problem
has developed that has been proven to be caused by a K&N, we will see to
it the problem is taken care of and paid for. In order to ensure that we
will be in a position to resolve the issue and determine the cause of
the problem, it is important that you know your rights as a consumer and
follow the steps outlined below.
Know your rights as a consumer and be persistent. The repair facility
must be able to support their claim with evidence.
Have them read the warranty letter at
or have them contact K&N directly at 1-800-858-3333. If you can’t get
them to call us, please call us yourself. You can also review relevant
information at www.semasan.com under the section “Warranty Issues.”
Have the service provider place in writing the nature of the problem
and why they believe a K&N product was at fault. This can be written on
the initial work order or subsequent documents. If they will not place
their position in writing, record the name of the individual who blamed
your K&N air filter.
Request that any parts replaced be returned to you. You need to ask
this when the service writer is filling out the initial work order. It
is important to have the parts claimed to have been damaged available
for inspection by K&N. We are able to microscopically inspect a MAF
sensor and chemically test it to identify any presence of oil. By the
use of specially designed equipment, we can determine if the MAF sensor
is operating properly.