The ODBII code U1518 indicates a communication failure between the Transmission Control Module (TCM) and other control modules in the vehicle’s network. The severity of ODBII code U1518 (TCM Communication Failure) is generally considered moderate to severe. Common Causes For: U1517 U1517: Transmission Control Module Communication Error Faulty Transmission Control Module (TCM) Damaged wiring or…

The ODBII code U1519 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 U1519 is generally considered moderate to severe. Common Causes For: U1518 U1518: TCM Communication Failure Faulty Transmission Control…

The ODBII code U1520 indicates a communication error between the Body Control Module (BCM) and other modules in the vehicle, suggesting a potential issue with wiring, connectors, or the BCM itself. Moderate. Common Causes For: U1519 U1519: Transmission Control Module Communication Error Faulty Body Control Module (BCM) Poor electrical connections or wiring issues Corroded connectors…

The ODBII code U1521 indicates a communication failure between control modules in a vehicle, suggesting that one or more modules are not properly communicating with each other. Moderate to severe. Common Causes For: U1520 U1520: Body Control Module Communication Error Faulty control module Damaged wiring or connectors Poor ground connections Corrupted software or firmware Communication…

The ODBII code U1522 indicates a “Module Communication Failure,” meaning there is a problem with communication between the vehicle’s control modules. The severity of ODBII code U1522 is moderate. Common Causes For: U1521 U1521: Control Module Communication Failure Faulty wiring or connectors Failed or malfunctioning control module Corrupted software or firmware in the module Poor…

The ODBII code U1523 indicates a communication failure between control modules in a vehicle, suggesting that one or more modules are not able to exchange data properly. The severity of ODBII code U1523 is moderate. Common Causes For: U1522 U1522: “Module Communication Failure” Faulty control module Poor electrical connections Damaged wiring harness Corroded connectors Software…

The ODBII code U1524 indicates a “Control Module Communication Error,” which means there is a problem with communication between the vehicle’s control modules, potentially due to a wiring issue, a faulty module, or a network problem. Moderate. Common Causes For: U1523 U1523: “Control Module Communication Failure” Faulty control module Poor electrical connections Damaged wiring harness…

The ODBII code U1525 indicates a communication failure between control modules in a vehicle, suggesting that one or more modules are not properly communicating with each other. The severity of ODBII code U1525 is moderate. Common Causes For: U1524 U1524: “Control Module Communication Error” Faulty control module Poor electrical connections Damaged wiring harness Corroded connectors…

The ODBII code U1526 indicates a “Control Module Communication Failure,” meaning there is a problem with the communication between the vehicle’s control modules, which may affect their ability to share data and function properly. The severity of ODBII code U1526 is moderate. Common Causes For: U1525 U1525: “Control Module Communication Failure” Faulty control module Poor…

The ODBII code U1527 indicates a vehicle network communication failure, typically related to issues in the communication between modules or components within the vehicle’s network. The severity of ODBII code U1527 is moderate. Common Causes For: U1526 U1526: “Control Module Communication Failure” Faulty wiring or connectors in the communication network. Malfunctioning control modules. Poor ground…