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11-04-2014, 06:26 PM | #1 |
Newbie
Drives: '99 Yaris 1.0L Join Date: Jul 2014
Location: Netherlands
Posts: 2
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Mass Air Flow sensor location '99 Yaris
Hi,
I'm looking for the MAF sensor on my '99 Yaris. About two weeks ago while driving, the CEL came on and stayed on for the rest of the trip. Connected my ODBII scanner when i got home and it returned error code "P0171 - Powertrain - System too lean (Bank 1)" Did some research and found some information about the STFT (Short Time Fuel Trim). When idle, the STFT should be close to zero and if it elevates to 15-20% it could be a faulty MAF sensor. I drove around for a bit and logged the STFT, and this is exactly what happens. A new sensor is about €280,- so i rather try cleaning it first. There are sensors on both sides of the air filter box. Does someone know which one is the MAF? |
Tags |
1999, maf, yaris |
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