2000 GMC Yukon code 0140

2000 GMC YUKON
136,000 MILES • V8 • 4WD • AUTOMATIC
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DESERTATD
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  • 1 POST
What is secondary air injection?
Sep 28, 2010 at 11:53 AM
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BLUELIGHTNIN6
  • ✓ASE Certified Mechanic
  • 16,542 POSTS
  • ASE Certified Mechanic
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
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