U1975 – Control Module Communication Bus Off.
The ODBII code U1975 indicates a communication issue where a control module is not able to communicate on the vehicle’s communication bus, often due to a fault in the module or wiring. The severity of ODBII code U1975 is moderate to severe. Common Causes For: U1974 U1974: “Module Communication Failure” Faulty control module Damaged wiring…
U1976 – Lost Communication with the Hybrid Powertrain Control Module (HPCM) A.
The ODBII code U1976 indicates a loss of communication with the Hybrid Powertrain Control Module (HPCM) A, suggesting that the vehicle’s diagnostic system is unable to communicate with this specific module, which may affect hybrid system performance. The severity of ODBII code U1976 is typically considered moderate to severe. Common Causes For: U1975 Control Module…
U1977 – Module Communication Fault
The ODBII code U1977: Module Communication Fault indicates a communication issue between vehicle control modules, suggesting that one or more modules are not properly exchanging data. The severity of ODBII code **U1977: Module Communication Fault** is generally considered moderate. Common Causes For: U1971: Vehicle Communication Bus Malfunction Faulty wiring or connectors Malfunctioning control modules Poor…
U1978 – Module Communication Failure
The ODBII code U1978 indicates a communication failure between modules in the vehicle’s network, suggesting that one or more control modules are not communicating properly with each other. The severity of ODBII code U1978 is moderate. Common Causes For: U1976 Lost Communication with the Hybrid Powertrain Control Module (HPCM) A. Faulty wiring or connectors Failed…
U1979 – Module Communication Failure
The ODBII code U1979 indicates a “Module Communication Failure,” meaning there is a problem with communication between vehicle control modules, often due to a fault in the wiring, connectors, or the modules themselves. The severity of ODBII code U1979 is moderate. Common Causes For: U1978 U1978: “Module Communication Failure” Faulty wiring or connectors Failed or…
U1980 – Lost Communication with the Body Control Module (BCM).
The ODBII code U1980 indicates a loss of communication between the vehicle’s control module and the Body Control Module (BCM), which may affect various electrical systems and functions. The severity of ODBII code U1980 is generally considered moderate to severe. Common Causes For: U1979 U1979: “Module Communication Failure” Faulty Body Control Module (BCM) Damaged wiring…
U1981 – Lost Communication with the Body Control Module (BCM).
The ODBII code U1981 indicates that there is a lost communication issue between the vehicle’s control module and the Body Control Module (BCM), which may affect various electrical systems and functions. The severity of ODBII code U1981 is generally considered moderate to high. Common Causes For: U1980 Lost Communication with the Body Control Module (BCM).…
U1982 – Module Communication Failure
The ODBII code U1982 indicates a “Module Communication Failure,” meaning there is a problem with communication between the vehicle’s control modules, often due to a fault in the wiring, connectors, or the modules themselves. The severity of ODBII code U1982 is moderate. Common Causes For: U1981 Lost Communication with the Body Control Module (BCM). Faulty…
U1983 – Lost Communication with the Body Control Module (BCM).
The ODBII code U1983 indicates that there is a communication failure between the vehicle’s control module and the Body Control Module (BCM), which may affect various electrical systems and functions. The severity of ODBII code U1983 is generally considered moderate to severe, as it indicates a communication issue that can affect multiple vehicle systems. Common…
U1984 – Module Communication Failure
The ODBII code U1984 indicates a “Module Communication Failure,” meaning that there is a problem with communication between the vehicle’s control modules, which may affect their ability to share data or function properly. The severity of ODBII code U1984 is moderate. Common Causes For: U1983 Lost Communication with the Body Control Module (BCM)”. Faulty wiring…