Question about 2004 GMC Sierra
Hi a code p0102 came up should i replace the sensor or can someone tell me how to test the sensor
P0102 is mass air flow sensor circuit, low input the MAF is attached to the air cleaner where the hose runs out of it... Unplug it and check the voltage supply and the ground... looking into the plug, with the tab facing up, there will be 3 connecters inside it, left to right they are.... sensor signal, ground and supply.... make sure you have 12 volts at your supply and the ground is good good luck
Posted on Feb 28, 2009
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Posted on Jan 02, 2017
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