U0140Lost Communication With Body Control Module
Ecco cosa significa il codice di errore U0140, perché si verifica e cosa fare.
Sistema: Network / module communication
Di solito è sicuro guidare per brevi tragitti, ma fallo controllare al più presto.
Cosa significa U0140
A module on the communication network has stopped receiving messages from the Body Control Module (BCM), the computer that runs many comfort and body electrical features such as lights, locks, wipers, and interior electronics. In practice, several electrical features may stop working or behave strangely. It is usually caused by lost power to the BCM or a break in the network wiring.
Sintomi comuni
- Multiple warning lights or messages on the dash
- Exterior or interior lights not working correctly
- Power locks, windows, or wipers not responding
- Gauges, chimes, or accessories behaving erratically
- Other modules reporting communication faults
Cause comuni
Elencate dalla più comune alla meno comune.
- 1Loss of power or ground to the BCM (blown fuse, corroded connector)
- 2Damaged, broken, or shorted CAN bus wiring to the BCM
- 3Corroded, loose, or backed-out connector pins at the BCM
- 4Another module disrupting the communication bus
- 5Failed or faulty Body Control Module
Cosa fare
Have this diagnosed soon, since the BCM controls many electrical features and the loss can affect lights and other functions you rely on. A technician should check BCM power, grounds, and fuses and inspect the network wiring before replacing the module. It is usually safe to drive short distances if your exterior lights and essential controls still work, but get it fixed before depending on the car.
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Domande frequenti
Cosa significa il codice U0140?
A module on the communication network has stopped receiving messages from the Body Control Module (BCM), the computer that runs many comfort and body electrical features such as lights, locks, wipers, and interior electronics. In practice, several electrical features may stop working or behave strangely. It is usually caused by lost power to the BCM or a break in the network wiring.
Quali sono le cause del codice U0140?
Le cause più comuni sono: Loss of power or ground to the BCM (blown fuse, corroded connector), Damaged, broken, or shorted CAN bus wiring to the BCM, Corroded, loose, or backed-out connector pins at the BCM, Another module disrupting the communication bus, Failed or faulty Body Control Module.
È sicuro guidare con U0140?
Di solito è sicuro guidare per brevi tragitti, ma fallo controllare al più presto.
Come si risolve il codice U0140?
Have this diagnosed soon, since the BCM controls many electrical features and the loss can affect lights and other functions you rely on. A technician should check BCM power, grounds, and fuses and inspect the network wiring before replacing the module. It is usually safe to drive short distances if your exterior lights and essential controls still work, but get it fixed before depending on the car.
Queste sono informazioni generali per aiutarti a capire il codice U0140, non un sostituto della diagnosi di un meccanico qualificato. Conferma sempre la causa prima di sostituire i componenti.
Le definizioni dei codici seguono l’elenco standardizzato OBD-II (SAE J2012). CarVinVin è indipendente e non è affiliata ad alcun produttore.