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09-11-2024, 10:23 AM | #1 |
Drives: 2008 yaris sedan Join Date: Sep 2024
Location: USA
Posts: 4
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Troublesome MAF Sensor Circuit Low code
2008 Yaris Sedan, ~190k miles
Bought it at 180k, was running fine for a bit then I started getting cylinder 4 misfire code, and then next day MAF sensor code. Main symptom was warm starts caused rough idle, driving would usually resolve the rough running. I just decided to start changing stuff that was likely overdue anyway rather than diagnose Most of the stuff I changed truly did need changing
Should I just cough up $90 for a new MAF sensor? I can't help but feel the sensor is OK sense the car dies when I unplug it. Maybe a grounding issue? Currently car runs and drives, but I feel like it's in a limp-mode of sorts. It isn't running ROUGH, but it doesn't feel full power. Car starts rough, like a there's a slight hesitation, and then it rocks around a bit before it sorts itself out. Since cleaning the MAF + PCV I've driven maybe 200 miles. I was thinking ECM needed time to adjust the fuel trims or something. If it's not a bad MAF, what would be left to check? A clogged fuel injector? At this point I need to diagnose rather than keep throwing parts at it haha |
09-11-2024, 12:06 PM | #2 |
Drives: 06 Polar White 5dr, 13 Soul 4u Join Date: Oct 2008
Location: Georgetown, Ontario, Canada
Posts: 5,766
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Is the o-ring gasket on MAF intact and providing a tight seal?
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09-12-2024, 02:42 PM | #3 |
Drives: 2008 yaris sedan Join Date: Sep 2024
Location: USA
Posts: 4
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I believe so, but ill check for certain when i return home, and look for any other leaks. I changed the air filter recently as well
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09-15-2024, 10:28 PM | #4 |
Drives: 2008 yaris sedan Join Date: Sep 2024
Location: USA
Posts: 4
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Yeah everything looks good. I didn't see any cracks on the intake hose either.
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10-13-2024, 10:56 PM | #5 |
Drives: 2008 yaris sedan Join Date: Sep 2024
Location: USA
Posts: 4
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New MAF Sensor solved this
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