On a Toyota Corolla, if you have P1381 this code would not be valid for you, use another scan tool , What you have experience is a misfire condition Because the event was not enough to harm the catalytic convertor the CK ENG LT would not come on nor would a pending code occur.
More than anything what you have experience is a misfire condition , when there is a demand on the engine at load the misfire condition is readily felt
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