The ODBII code U1765 indicates a “Module Communication Failure,” meaning there is a problem with communication between the vehicle’s control modules, which may affect their ability to exchange data properly. The severity of ODBII code U1765 is moderate. Common Causes For: U1763 U1763: “Module Communication Failure” Faulty wiring or connectors Failed control module Corrupted software…

The ODBII code U1766: 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 **U1766: Module Communication Failure** is generally considered moderate to severe. Common Causes For: U1764: Module Communication Fault Faulty wiring or connectors Failed or malfunctioning control…

The ODBII code U1767: Data Bus Communication Fault indicates a problem with communication between modules on the vehicle’s data bus, which may affect the operation of various electronic systems. The severity of ODBII code U1767 is moderate. Common Causes For: U1765 U1765: “Module Communication Failure” Faulty wiring or connectors in the data bus system. Malfunctioning…

The ODBII code U1768: Data Bus Communication Fault indicates a problem with the communication between modules on the vehicle’s data bus, which may affect the operation of various electronic systems. The severity of ODBII code U1768 is moderate. Common Causes For: U1767 U1767: Data Bus Communication Fault Faulty wiring or connectors in the data bus…

The ODBII code U1769: CAN Bus Communication Failure indicates a problem with the communication between the vehicle’s control modules over the Controller Area Network (CAN) bus, which may affect the performance of various systems. The severity of ODBII code U1769: CAN Bus Communication Failure is generally considered moderate to severe. Common Causes For: U1768 U1768:…

The ODBII code U1770 indicates a communication failure between the Engine Control Module (ECM) and the Transmission Control Module (TCM). The severity of ODBII code U1770 is moderate to severe. Common Causes For: U1769 U1769: CAN Bus Communication Failure Faulty ECM (Engine Control Module) Faulty TCM (Transmission Control Module) Damaged wiring or connectors between ECM…

The ODBII code U1771 indicates a communication failure between the Transmission Control Module (TCM) and the Engine Control Module (ECM), suggesting that these two components are unable to exchange data properly. The severity of ODBII code U1771: TCM-ECM Communication Failure is generally considered moderate to severe. Common Causes For: 1. U1609: ECM-BCM Communication Failure Faulty…

The ODBII code U1772 indicates a “Control Module Communication Failure,” meaning there is a problem with communication between the vehicle’s control modules, which can affect various systems and functions. The severity of ODBII code U1772 is moderate to high. Common Causes For: U1770 U1770: ECM/TCM Communication Failure Faulty control module Poor electrical connections Damaged wiring…

The ODBII code U1773 indicates a communication error between the Transmission Control Module (TCM) and other control modules in the vehicle, suggesting a possible issue with wiring, connectors, or the TCM itself. The severity of ODBII code U1773 is moderate to severe. Common Causes For: U1772 U1772: “Control Module Communication Failure” Faulty Transmission Control Module…

The ODBII code U1774 indicates a communication error between the Transmission Control Module (TCM) and other control modules in the vehicle, suggesting a possible issue with data transmission or connectivity. Moderate to severe. Common Causes For: U1773 U1773: Transmission Control Module Communication Error Faulty Transmission Control Module (TCM) Damaged wiring or connectors Poor electrical connections…