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mike switzer
mike switzer,
Category: Subaru
Satisfied Customers: 712
Experience:  lead diagnostic tech at Aamco
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I replaced mass air flow sensor. Check engine light went

Customer Question

I replaced mass air flow sensor. Check engine light went off. Next day it went back on. Air filters were recently replaced. Any suggestions?
JA: Does the light stay on, or does it blink?
Customer: Stays on.
JA: What is the model/year of your Subaru?
Customer: 2012 Forrester
JA: Are you fixing your vehicle yourself? What have you tried so far?
Customer: Got the neww sensor from Auto Zone. Was easy to install myself.
JA: Anything else you want the mechanic to know before I connect you?
Customer: no thanks.
Submitted: 2 months ago.
Category: Subaru
Expert:  david craig replied 2 months ago.

Hi Im David, thanks for visiting the site. what code do yo have?

Customer: replied 2 months ago.
PO171
Customer: replied 2 months ago.
I dont get good reception on my cell.
Expert:  david craig replied 2 months ago.

thats ok, just ignore the pop ups.

Expert:  david craig replied 2 months ago.

ok, what led you to replace the MAF?

Customer: replied 2 months ago.
Check engine light went on.
Expert:  david craig replied 2 months ago.

ok, thats fine, but p0171 can be caused by alot of things. before you replace any component you need to make sure its bad by test the voltage, ground and signal to the component. other wise you are just wasting your money.

Customer: replied 2 months ago.
Okay thanks.
Expert:  david craig replied 2 months ago.

sorry the first one didnt work, let me try it again

Expert:  david craig replied 2 months ago.
Expert:  david craig replied 2 months ago.

well that didnt work either, dang it

Expert:  david craig replied 2 months ago.
Expert:  david craig replied 2 months ago.

ok, i give up. ill open this up to the others.

Expert:  mike switzer replied 2 months ago.

when the check engine light went on the first time was that the only code or was there more?