U0121Lost Communication With Anti-Lock Brake System (ABS) Control Module
Oto co oznacza kod usterki U0121, dlaczego się pojawia i co z nim zrobić.
Układ: Network / module communication
Unikaj jazdy — ta usterka może być niebezpieczna lub prowadzić do większych uszkodzeń. Sprawdź to od razu.
Co oznacza U0121
A module on the communication network has stopped receiving messages from the ABS (anti-lock brake) control module. In practice, the car can no longer communicate with the system that manages anti-lock braking and usually traction/stability control. Normal braking generally still works, but the safety-assist features (ABS, traction control, stability control) are typically disabled. It is often caused by lost power to the ABS module or a network wiring problem.
Typowe objawy
- ABS warning light on
- Traction control / stability control (ESC) light on
- Check engine light may be on
- ABS and stability features disabled
- Speedometer may be inaccurate or dead on some vehicles
Typowe przyczyny
Uporządkowane od najczęstszych do najrzadszych.
- 1Loss of power or ground to the ABS module (blown fuse, corroded connector)
- 2Damaged, broken, or shorted CAN bus wiring to the ABS module
- 3Corroded, loose, or backed-out connector pins at the ABS module
- 4Another module disrupting the communication bus
- 5Failed or faulty ABS control module
Co zrobić
Have this checked soon, because ABS, traction control, and stability control are likely disabled even though basic braking still works. Drive gently and allow extra stopping distance, especially in rain, ice, or hard braking, until it is repaired. A technician will check ABS module power, grounds, and the network wiring before replacing parts.
Kupujesz auto z kodem U0121?
Zapisany kod usterki może wskazywać na ukryty problem. Zdekoduj VIN, aby bezpłatnie poznać dane auta i oficjalne akcje przywoławcze dotyczące bezpieczeństwa.
Najczęściej zadawane pytania
Co oznacza kod U0121?
A module on the communication network has stopped receiving messages from the ABS (anti-lock brake) control module. In practice, the car can no longer communicate with the system that manages anti-lock braking and usually traction/stability control. Normal braking generally still works, but the safety-assist features (ABS, traction control, stability control) are typically disabled. It is often caused by lost power to the ABS module or a network wiring problem.
Co powoduje kod U0121?
Najczęstsze przyczyny to: Loss of power or ground to the ABS module (blown fuse, corroded connector), Damaged, broken, or shorted CAN bus wiring to the ABS module, Corroded, loose, or backed-out connector pins at the ABS module, Another module disrupting the communication bus, Failed or faulty ABS control module.
Czy można bezpiecznie jechać z U0121?
Unikaj jazdy — ta usterka może być niebezpieczna lub prowadzić do większych uszkodzeń. Sprawdź to od razu.
Jak naprawić kod U0121?
Have this checked soon, because ABS, traction control, and stability control are likely disabled even though basic braking still works. Drive gently and allow extra stopping distance, especially in rain, ice, or hard braking, until it is repaired. A technician will check ABS module power, grounds, and the network wiring before replacing parts.
To ogólne informacje, które pomogą Ci zrozumieć kod U0121, a nie zastępstwo dla diagnostyki przez wykwalifikowanego mechanika. Zawsze potwierdź przyczynę, zanim wymienisz części.
Definicje kodów są zgodne ze znormalizowaną listą OBD-II (SAE J2012). CarVinVin jest niezależny i nie jest powiązany z żadnym producentem.