U2021 Code: Meaning, Causes, and Symptoms | OBD2 Codes
U2021 – Invalid /fault data received (Non SCP)
U2021 Possible Symptoms
Engine Light ON (or Service Engine Soon Warning Light)
Invalid /fault data received (Non SCP) is the generic description for the U2021 code, but the manufacturer may have a different description. Currently we have no further information abouth the U2021 OBDII code.