Code No. U0121:
ABS/ASC-ECU Time-out
DIAGNOSIS CODE SET CONDITIONS
- Open circuit or short circuit occurs in the CAN communication line (CAN_H,
CAN_L).
- Reception from ABS/ASC-ECU becomes impossible for 0.5 seconds or more.
PROBABLE CAUSES
- Malfunction of the CAN bus
- Malfunction of the ABS/ASC-ECU
- Malfunction of the A/T-ECU