U0140Lost Communication With Body Control Module
Voici ce que signifie le code défaut U0140, pourquoi il apparaît et que faire à son sujet.
Système: Network / module communication
Généralement sans danger sur de courtes distances, mais faites-le contrôler rapidement.
Ce que signifie 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.
Symptômes courants
- 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
Causes courantes
Classées de la plus courante à la moins courante.
- 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
Que faire
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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Questions fréquentes
Que signifie le code 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.
Quelles sont les causes du code U0140 ?
Les causes les plus courantes sont : 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.
Peut-on rouler sans danger avec le code U0140 ?
Généralement sans danger sur de courtes distances, mais faites-le contrôler rapidement.
Comment corriger le code 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.
Ce sont des informations générales pour vous aider à comprendre le code U0140, et non un substitut au diagnostic d’un mécanicien qualifié. Confirmez toujours la cause avant de remplacer des pièces.
Les définitions des codes suivent la liste OBD-II normalisée (SAE J2012). CarVinVin est indépendant et n’est affilié à aucun constructeur.