When to use fault code u0140 in OBD II?
OBD II fault code U0140 is a generic code that is defined as “Lost Communication with Body Control Module”, but sometimes also as “Data bus: body control module (8CM)- no communication” and is set when the PCM (Powertrain Control Module detects a communication failure between itself and the BCM (Body Control Module)…
What does BCM code u0140 stand for?
Battery rundown protection, the temperature sensor and the low power mode function may all be affected by a bad BCM, loose connection to the BCM or an open/short in the BCM’s harness. Code U0140 pertains to the BCM or the wiring to the BCM from the engine control module (ECM).
What does lost communication with Body Control Module DTC mean?
The code, depending on the year, make and model of the vehicle, may mean that the BCM is bad, that the BCM is not receiving or sending a signal, the BCM harness has an open or short, or that the BCM is not communicating with the ECM via the controller area network – the CAN communication line.
Is there a lost communication code for u0100?
Codes U0100 to U0300 are lost communication with XX module codes. U0100 is monitored when the ignition is on, battery voltage is at a certain level and other key modules are configured correctly. No comments yet…
What does code u0140 mean on a vehicle?
Code U0140 stands for Lost Communication with Body Control Module (BCM) What does code U0140 mean? On a vehicle, the body control module (BCM) is the computer responsible for various body-related functions. The BCM receives input from sensors and switches throughout the vehicle. It then uses this information to determine control of body-related
What does the code u0140 on a BCM mean?
On some vehicles, the BCM acts as a gateway module, enabling communication between the CAN High and CAN Low buses. It may also perform other duties, such as acting as an interface to the anti-theft system and climate control. Code U0140 indicates the BCM is not receiving or transmitting messages on the CAN bus.
What does lost communication with Body Control mean?
Share it! Code U0140 stands for Lost Communication with Body Control Module (BCM) What does code U0140 mean? On a vehicle, the body control module (BCM) is the computer responsible for various body-related functions. The BCM receives input from sensors and switches throughout the vehicle.