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05-03-2021, 07:01 PM | #1 |
Oldie
Drives: 2012 yaris sedan Join Date: Apr 2021
Location: Northern california
Posts: 10
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Will a faulty MAF sensor always spark a check engine light?
My 2012 sedan has some acceleration hesitation, a lot like whats is described for a bad MAF sensor. But my check engine light is off.
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05-04-2021, 09:01 AM | #2 |
Drives: 06 Polar White 5dr, 13 Soul 4u Join Date: Oct 2008
Location: Georgetown, Ontario, Canada
Posts: 5,741
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There is a difference between a faulty maf and a dirty maf. A dirty one can affect performance but not trigger a code. Cleaning is easy. Do it and see what results.
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05-04-2021, 11:57 AM | #3 |
Drives: Yaris T sport TRD turbo Join Date: Aug 2017
Location: Netherlands
Posts: 105
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No
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2004 Yaris T-Sport 1NZ-FE with TRD Turbo |
05-04-2021, 01:56 PM | #4 |
Drives: '08 2zr swapped Vios M/T Join Date: Oct 2012
Location: Caledonia Ont.
Posts: 2,938
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Check your throttle body and see how dirty it is.
Also I would be at live data such as fuel trims and maf air flow at idle to get an idea of it being a maf issue or not
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No one ever wants to give a Yaris the point by... |
05-05-2021, 02:38 PM | #5 |
Oldie
Drives: 2012 yaris sedan Join Date: Apr 2021
Location: Northern california
Posts: 10
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Thank you for thr tips. I already cleaned the throttle body and picked up some MAF sensor cleaner. I give it a shot this afternoon.
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