# Mass air flow sensor cleaner **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** legacy, sensors, subaru\ **Created:** [December 19, 2010, 8:09pm UTC](https://community.cartalk.com/t/mass-air-flow-sensor-cleaner/58916 "2010-12-19T20:09:39Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![ctm533](https://avatars.discourse-cdn.com/v4/letter/c/3d9bf3/32.png) [@ctm533](https://community.cartalk.com/u/ctm533)\ **Post date:** [December 19, 2010, 8:09pm UTC](https://community.cartalk.com/t/mass-air-flow-sensor-cleaner/58916/1 "2010-12-19T20:09:39Z")
I can’t seem to locate the mass air flow sensor on my 2003 subaru legacy 2.5L. Where is it hiding? ---
**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\ **Post date:** [December 19, 2010, 8:35pm UTC](https://community.cartalk.com/t/mass-air-flow-sensor-cleaner/58916/2 "2010-12-19T20:35:38Z")
Your engine doesn’t utilize a Mass Air Flow sensor. Instead it utilizes a Manifold Absolute Pressure sensor. Tester ---
**Author:** ![ctm533](https://avatars.discourse-cdn.com/v4/letter/c/3d9bf3/32.png) [@ctm533](https://community.cartalk.com/u/ctm533)\ **Post date:** [December 19, 2010, 9:41pm UTC](https://community.cartalk.com/t/mass-air-flow-sensor-cleaner/58916/3 "2010-12-19T21:41:59Z")
Great! I was had! My check engine light came on. I went to autozone and they hooked it up to the computer. The guy told me that the MAFS was dirty and sold me a can of cleaner. Now that has been ruled out as the cause of my light coming on, do you have any suggestions as to why it may have been triggered? Thanks ---
**Author:** ![waterboy](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/waterboy/32/764_2.png) [@waterboy](https://community.cartalk.com/u/waterboy)\ **Post date:** [December 19, 2010, 10:09pm UTC](https://community.cartalk.com/t/mass-air-flow-sensor-cleaner/58916/4 "2010-12-19T22:09:47Z")
Codes would be helpful if you have them.