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I replaced mass air flow sensor. Check engine light went…

Customer Question
I replaced mass air...

I replaced mass air flow sensor. Check engine light went off. Next day it went back on. Air filters were recently replaced. Any suggestions?

Mechanic's Assistant: Does the light stay on, or does it blink?

Stays on.

Mechanic's Assistant: What is the model/year of your Subaru?

2012 Forrester

Mechanic's Assistant: Are you fixing your vehicle yourself? What have you tried so far?

Got the neww sensor from Auto Zone. Was easy to install myself.

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

No thanks.

Submitted: 6 months ago.Category: Subaru
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Answered in 2 minutes by:
8/5/2017
Subaru Mechanic: David Craig, Auto Mechanic replied 6 months ago
David Craig
David Craig, Auto Mechanic
Category: Subaru
Satisfied Customers: 4,699
Experience: Owner/Mechanic at 3D Automotive
Verified

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

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Customer reply replied 6 months ago
PO171
Customer reply replied 6 months ago
I dont get good reception on my cell.
Subaru Mechanic: David Craig, Auto Mechanic replied 6 months ago

thats ok, just ignore the pop ups.

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Subaru Mechanic: David Craig, Auto Mechanic replied 6 months ago

ok, what led you to replace the MAF?

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Customer reply replied 6 months ago
Check engine light went on.
Subaru Mechanic: David Craig, Auto Mechanic replied 6 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.

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Customer reply replied 6 months ago
Okay thanks.
Subaru Mechanic: David Craig, Auto Mechanic replied 6 months ago

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

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Subaru Mechanic: David Craig, Auto Mechanic replied 6 months ago

well that didnt work either, dang it

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Subaru Mechanic: David Craig, Auto Mechanic replied 6 months ago

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

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Subaru Mechanic: mike switzer,
 replied 6 months ago
mike switzer
Category: Subaru
Satisfied Customers: 727
Experience: lead diagnostic tech at Aamco
Verified

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

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mike switzer
mike switzer
mike switzer
Category: Subaru
Satisfied Customers: 727
727 Satisfied Customers
Experience: lead diagnostic tech at Aamco

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