Saw this in the Release Notes for v3.7.3:
[S2000] Added secondary O2 sensor heater disable and P2270/P2271 disable.
When should we use this option instead of the existing checkbox for "Secondary O2 Enabled"?
[S2000] secondary O2 sensor heater disable
Re: [S2000] secondary O2 sensor heater disable
Are you getting those error codes?