2000 GMC Yukon code 0140

2000 GMC YUKON
136,000 MILES • V8 • 4WD • AUTOMATIC
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DESERTATD
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What is secondary air injection?
Sep 28, 2010 at 11:53 AM
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BLUELIGHTNIN6
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p0140 indicates faulty oxygen sensor on bank 1, sensor 2..not the air injection system, but the air injection is part of your vehicle's emissions system.
Sep 28, 2010 at 3:35 PM