The Average Engine Air Filter Replacement Cost Is $20 to $85, Depending on if You Go to the Mechanic or DIY.

OBD Code P2191 – System Too Lean At Higher Load Bank 1 Now if the powertrain control module would detect a lean condition, then it would mean that there is too much air in the air/fuel ratio. This error code is set for Bank 1, which is the bank of cylinders that involves cylinder number 1.

A dirty air filter is one of the things that can cause your Check Engine light to come on, caused by an inadequate supply of air to the engine that results in a buildup of carbon deposits. Have your mechanic scan your vehicle to track down the source of the problem, as it could be as simple as replacing the air filter.

• Cost at the Mechanic: $40 to $85. Parts: $20 to $40. Labor: $20 to $35.
• DIY Difficulty Level: Beginner.

Air filter appears dirty A clean air filter appears white or off white in color, but as it accumulates dust and dirt, it will look darker in color. However, very often, the inner layers of filter paper inside the air filter might have dust and debris that is not visible even in bright light.

Make it easy on yourself with these tips:

1. Order filters from a service that mails them to your home every 30, 60, 90 or 120 days.
2. Stock up on a year’s supply of filters.
3. Buy filters by the box for a lower per-filter cost.

A HEPA filter marketed as “permanent” should be cleaned by gently using a vacuum cleaner to suck away dust and debris from the surface of the filter. Water should not be used on these types of filters.

While manufacturers do not recommend vacuuming air cleaner filters, you could slightly prolong the life of your filter by regularly vacuuming it and its surrounding encasement. When vacuuming, use the handheld attachment.

You shouldn’t drive your car without an air filter. It will seem fine and even run better (more responsive) because of the increased air flow. However, the long term damages could be big. If you must absolutely drive it for short distances, it should be okay.