U0121Wysoki
Utrata komunikacji z modułem ABS
Komunikacja sieciowa
Sprawdź szczegóły →U0425
WysokiInvalid Data Received from Electric Power Steering (EPS) Module. The vehicle control module has detected erroneous or out-of-range data transmitted via the CAN network from the electric power steering controller.
OBD-II (EN): Invalid Data Received from Electric Power Steering (EPS) Control Module
Code U0425 means the vehicle's central computer has received invalid or out-of-range data from the Electric Power Steering (EPS) module. This can be caused by damage to the CAN harness, electrical connector, or the EPS controller itself. Due to the impact on driving safety and ADAS systems, immediate diagnosis at a service center with a professional scanner is recommended.
Symptoms
EPS warning light illuminated, heavier or stiff steering wheel, automatic deactivation of lane keeping and parking assist systems, warning messages 'Service Power Steering' or 'EPS Fault' on the dashboard, possible torque limitation, additional DTCs in other modules indicating missing or erroneous data from EPS.
Possible causes
• Faulty or defective electric power steering control module (EPS/EPAS) • Open or short circuit in the CAN bus wiring harness connecting the EPS module to other controllers • Corrosion or damage to the EPS module electrical connector • Too low supply voltage (discharged battery, faulty alternator) causing communication errors • EPS module software (firmware) fault requiring update or reinitialization
Affected systems
Elektryczne wspomaganie kierownicy (EPS/EPAS)Magistrala CANSystem ADAS (asystent pasa ruchu, parking assist)Moduł karoserii (BCM)Układ stabilizacji toru jazdy (ESP/ESC)
Related codes
U0100Krytyczny
Utrata komunikacji z ECM (sterownik silnika)
Komunikacja sieciowa
Sprawdź szczegóły →Does code U0425 require professional diagnostics?
The code alone is not enough. To find the cause, you need to read live data, check freeze frame conditions, and compare with vehicle behavior. Book a diagnostic session.