U0121 HONDA – FCAN Malfunction (TCS-PCM)

U0121 HONDA Possible Symptoms

ABS Warning Light ON,Engine Light ON (or Service Engine Soon Warning Light)

U0121 HONDA Possible Causes

Poor connections or loose terminals at the ABS modulator-control unit and the PCM
“Open” circuit between the PCM and the ABS modulator-control unit
Faulty ABS modulator-control unit

U0121 HONDA Description

FCAN Malfunction (TCS-PCM) is the generic description for the U0121 Honda code, but the manufacturer may have a different description. Currently we have no further information abouth the U0121 Honda OBDII code.