There are many conflicting views on the usage of code switching (CS) in English Language classroom (ESL) as many believe that the target language, English, should be the medium of instruction. However, CS seems to be an alternative way in teaching English language to promote better understanding. Especially in this sudden outbreak of coronavirus pandemic, teaching and learning have been shifted to Online Distance Learning (ODL) to adapt to the new norm. This situation has made CS as an effective alternative in amplifying English language teaching and learning process. That is why Shartiely (2016) suggests that the implementation of CS will facilitate learning in language classes, Hence, this research aims to investigate the effectiveness of code switching in the learning and teaching of English language subject through Open Distance Learning (ODL). 50 educators are required to answer a questionnaire consists of 20 questions which covers the frequency on the usage of CS and their opinion on the implementation of CS as an interactive tool in ESL classroom. Meanwhile, 372 students need to answer a questionnaire which consists of 20 questions on the implementation of CS as an interactive tool in the ESL classroom. It is hoped that the findings of this research could provide insights into the usage of CS in the teaching of English language as an interactive tool in online ESL classrooms.