1999 GMC Truck obd code po157

1999 GMC TRUCK
145,000 MILES • V8 • 4WD • AUTOMATIC
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JEFF FARNHAM
  • MEMBER
  • 1 POST
truck runs good changed o2sensor light keeps coming on no exhaust leaks or vaccum leaks how do i get light to stay off?
Oct 16, 2009 at 4:19 PM
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MICKEY-D
  • ✓ASE Certified Mechanic
  • 304 POSTS
  • ASE Certified Mechanic
I just checked my code book, and it seems there is more than one sensor. The code says "circuit low volts"(bank2 sensor 2) You should have it scanned again, and find out what type of sensor it is, and its location.
Dec 31, 2009 at 10:12 PM
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