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low voltage input????????

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Old Dec 21, 2007 | 01:35 PM
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Default low voltage input????????

So my engine light comes on and i get it scanned. Its saying the mass air's voltage input is low. What the hell does that mean? Did it take a pooh or is it something else? Any one got some idea's? I sure the hell don't. I have never had this problem. I guess there is a first time for everything.

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Old Dec 21, 2007 | 02:04 PM
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If it's cranky getting your shifter into reverse too check the ENG SEN fuse. If the fuse is OK I'd look up the code/diagnostics for your year at gearchatter.com
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Old Dec 23, 2007 | 11:23 PM
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whats the ENG SEN fuse?
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Old Dec 24, 2007 | 01:42 AM
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eng sen = engine sensor, it is 20amp fuse under the hood
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Old Dec 24, 2007 | 10:09 AM
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Originally Posted by bryan04h
eng sen = engine sensor, it is 20amp fuse under the hood
This will make your car read a low voltage signal and make your check engine light come on?
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Old Dec 24, 2007 | 10:10 AM
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The reason i ask is because one of my sensors (IAT or MAF sensors) are reading high or low voltage (can't remember)
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Old Dec 24, 2007 | 10:16 AM
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What code you throwing? P0102 is the MAF low voltage code and is on the ENG SEN fuse circuit, along with the 02s and reverse lockout and skip shift solenoids on the M6 cars.
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Old Dec 26, 2007 | 07:16 AM
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yeah those are all the codes that show. I don't remember the number but the skip, maf low volt and reverse lock out are throwing the light. So i will check the fuse ltr . thanks
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Old Dec 26, 2007 | 08:18 AM
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Check the pink wire on the maf sensor while the key is turned on, it should have 12v.
Also check the Black wire on it. that should be a good ground. If not then you have a cut wire somewhere or a popped fuse. I would look for burnt/touching wires near the o2 sensors on the headers.
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