test oxygen circuit

1988 OLDSMOBILE CALAIS
6 CYL • 2WD • AUTOMATIC
Avatar
KUDOS101
  • MEMBER
  • 1 POST
My 1988 oldsmobile cutlass calais 3.0 V6 has a code 13. How do you test for an open circuit in the oxygen circuit?
Aug 25, 2011 at 12:48 AM
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.
Advertisement
Avatar
WRENCHTECH
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 20,761 POSTS
It's not necessarily an open circuit. It's just reading below 500mv for too long. That could also mean a severe lean mixture. You will have to use a DVOM to measure voltage right at the sensor but it would make more sense to just replace the sensor and clear to code to see if you still have a problem.
Aug 25, 2011 at 1:44 AM
Advertisement