The ODBII code U1985 indicates a “Module Communication Failure,” meaning there is a problem with communication between vehicle control modules, which may affect their ability to share data or function properly. The severity of ODBII code U1985 is moderate. Common Causes For: U1984 U1984: “Module Communication Failure” Faulty wiring or connectors Malfunctioning control module Poor…

The ODBII code U1986 indicates a “Module Communication Failure,” meaning 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 U1986 is moderate. Common Causes For: U1985 U1985: “Module Communication Failure” Faulty wiring or connectors Failed or malfunctioning…

The ODBII code U1987 indicates a “Module Communication Failure,” meaning there is a problem with communication between the vehicle’s control modules, often due to a wiring issue, a faulty module, or a network problem. The severity of ODBII code U1987 is moderate. Common Causes For: U1986 U1986: “Module Communication Failure” Faulty wiring or connectors Failed…

The ODBII code U1988 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 U1988 is generally considered moderate to severe. Common Causes For: U1987 U1987: “Module Communication Failure” Faulty Body Control Module (BCM)…

The ODBII code U1989: Module Communication Failure indicates that there is a communication issue between the vehicle’s control modules, preventing them from exchanging data properly. The severity of ODBII code **U1989: Module Communication Failure** is generally considered moderate to severe, depending on the specific vehicle and the affected systems. Common Causes For: U1977: Module Communication…

The ODBII code U1990 indicates a fault in the CAN (Controller Area Network) communication bus, suggesting a communication issue between modules in the vehicle’s network. The severity of ODBII code U1990 CAN Communication Bus Fault is generally considered moderate to severe. Common Causes For: U1988 Lost Communication with the Body Control Module (BCM)”. Faulty CAN…

The ODBII code U1991 indicates an “Inter-Module Communication Failure,” meaning there is a problem with the communication between different electronic control modules in the vehicle. The severity of ODBII code U1991 is generally considered moderate. Common Causes For: U1990 CAN Communication Bus Fault. Faulty wiring or connectors Malfunctioning control modules Poor ground connections Corroded or…

The ODBII code U1992 indicates a failure in communication between modules in a vehicle’s network, suggesting that one or more electronic control units (ECUs) are unable to exchange data properly. The severity of ODBII code U1992 is generally considered moderate. Common Causes For: U1991 U1991: “Inter-Module Communication Failure” Faulty wiring or connectors Malfunctioning control modules…

The ODBII code U1993: Inter-Module Communication Failure indicates a problem with communication between different control modules in a vehicle, suggesting that one or more modules are not able to send or receive data properly. The severity of ODBII code **U1993: Inter-Module Communication Failure** is generally considered moderate to severe. Common Causes For: U1989: Module Communication…

The ODBII code U1994 indicates a communication failure between modules in a vehicle’s network, suggesting that one or more electronic control units (ECUs) are unable to exchange data properly. The severity of ODBII code U1994: Inter-Module Communication Failure is generally considered moderate. Common Causes For: 1. U1964: Module Communication Failure Faulty wiring or connectors Malfunctioning…