The ODBII code U1787 indicates a communication issue between the transmission control module (TCM) and other control modules in the vehicle, suggesting a potential fault in the data transmission network. The severity of ODBII code U1787 is generally considered moderate to high. Common Causes For: U1786 refers to a communication issue related to the transmission…

The ODBII code U1788 indicates a communication issue between the transmission control module (TCM) and other control modules in the vehicle, suggesting a potential fault in the data transmission network. The severity of ODBII code U1788 is generally considered moderate to high. Common Causes For: U1787 refers to a communication issue related to the transmission…

The ODBII code U1789 indicates a communication issue between the transmission control module (TCM) and other control modules in the vehicle, suggesting a potential fault in data transmission or connectivity. The severity of ODBII code U1789 is generally considered moderate to high. Common Causes For: U1788 refers to a communication issue related to the transmission…

The ODBII code U1790 indicates a communication issue between the engine control module (ECM) and the transmission control module (TCM), suggesting a failure in data exchange between these two components. The severity of ODBII code U1790 is typically considered moderate to high. Common Causes For: U1789 refers to a communication issue related to the transmission…

The ODBII code U1791: Communication Network Malfunction indicates a failure in the communication between various control modules in the vehicle’s network, which can affect their ability to exchange information properly. The severity of ODBII code U1791 is moderate. Common Causes For: U1790 refers to a communication issue between the engine control module (ECM) and the…

The ODBII code U1792 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 U1792 is moderate. Common Causes For: U1791 U1791: Communication Network Malfunction Faulty control module Poor electrical connections Damaged wiring harness Corroded…

The ODBII code U1793 indicates a communication issue between the engine control module (ECM) and the transmission control module (TCM), suggesting a failure in data exchange between these two components. The severity of ODBII code U1793 is typically considered moderate to high. Common Causes For: U1792 U1792: “Control Module Communication Failure” Faulty wiring or connectors…

The ODBII code U1794 SCP (J1850) indicates a communication issue where the vehicle’s control module is not receiving an acknowledgment signal from the mirrors’ control module, suggesting a potential fault in the wiring, connectors, or the mirrors’ control module itself. The severity of ODBII code U1794 is moderate. Common Causes For: U1793 refers to a…

The ODBII code U1795 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 U1795 is moderate to severe. Common Causes For: U1794 SCP (J1850) Lack of Acknowledgment for Mirrors Faulty Transmission…

The ODBII code U1796 indicates a “Control Module Communication Failure,” meaning there is a problem with communication between the vehicle’s control modules, which may affect their ability to share data and function properly. The severity of ODBII code U1796 is moderate. Common Causes For: U1795 U1795: Transmission Control Module Communication Error Faulty control module Poor…