What is code P1137 on a 2000 Chevrolet S10?

Question

Wanting to know what code means and how to fix it.

Answer 1

P1137 Lack of H02S switch sensor indicates lean

This is a lean condition where the air to fuel ratio, has more air ,lean cause are from unmetered vacuum leaks , or a MAF(mass air flow) that under reports.and sparkplugs that are worn. Start by inspecting for vacuum leaks and do a MAF cleaning with a throttle body cleaning, if the sparkplugs are worn replace them. With P1137 returns the 02 sensor may need replacing.