- Enter a Question or Subject and Click Search -po120

1999 PONTIAC GRAND PRIX
168,543 MILES • 6 CYL • FWD • AUTOMATIC
Avatar
KNEEPADSLH
  • MEMBER
  • 5 POSTS
car runs fine while driving etc ever now and then its stalls i use my scan tool and got code po 120 low out put on circuit a and o2 sensor code no signal from o2 sensor. what will cause po120 . and how can i fix it . help help thanks.
Mar 20, 2012 at 2:45 AM
Advertisement
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
Avatar
JACOBANDNICKOLAS
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 110,190 POSTS
Check the throttle position sensor
Mar 20, 2012 at 3:09 AM
Avatar
KNEEPADSLH
  • MEMBER
  • 5 POSTS
will it be best to replace it or most of the time when this code po120 the tsp is bad
Mar 20, 2012 at 3:46 AM
Advertisement
Avatar
JACOBANDNICKOLAS
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 110,190 POSTS
Usually it is bad
Mar 20, 2012 at 3:52 AM