I know that code one is O2 SENSOR but why would it make my car go into almost limp mode. "Im driving along no light runs great..5 min later light comes on and falls on face misfire's feels like tps is messed up. "As im rolling turn off car then back on .. all good again no light runs great 5 min later...repeat!

Any tips guys b18a1 in a crx PM6 ecu.<- maybe i need pr4 and thats the problem.