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07-17-2012, 01:32 PM | #1 |
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P1140 Code - Maf
Changed the headers on my wife's car a few weeks ago.
Now, a cel is popping up, P1140 - MAF sensor out of range. What have you guys seen before to cause this? I am guessing a vacuum leak - but not 100% sure. Looking for a few pointers on where to start. No other codes present, and my scanner is the generic reader. Thanks! James |
07-17-2012, 06:26 PM | #2 |
Colonel
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Drives: ESS/G-Power Z4M, VF Z4, 996tt
Join Date: Sep 2009
Location: Los Angeles
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How is the car running otherwise? Did you remove the MAF recently?
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07-17-2012, 09:01 PM | #3 |
Second Lieutenant
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Runs beautifully.
I did pull the intake (not the manifold) for motor mount hardware replacement. But, I have triple checked the area. It has to be the culprit. I have an ultrasonic tester, and will see if I can find it.... |
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07-17-2012, 11:17 PM | #5 |
Colonel
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Drives: ESS/G-Power Z4M, VF Z4, 996tt
Join Date: Sep 2009
Location: Los Angeles
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Have you tried resetting it?
Unplugging it will put the car in speed density mode and throw a code... at least, that's what it does on my 3.0i. If the orientation was incorrect, the idle would be erratic. I'd have to look at the M again, but on the 3.0i it is definitely possible for the plug to be reversed (plugged in upside down). Check the wiring thoroughly for loose wires. Otherwise, you could check the M3 forums.
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