U1634 – Vehicle Communication Bus Malfunction
The ODBII code U1634 indicates a malfunction in the vehicle communication bus, which affects the ability of various electronic control units (ECUs) to communicate with each other. The severity of ODBII code U1634 is moderate. Common Causes For: U1633 Invalid or Missing Data for Vehicle Speed. Faulty OBD-II connector Damaged wiring or connectors in the…
U1635 – CAN Communication Bus Fault.
The ODBII code U1635 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 U1635 CAN Communication Bus Fault is moderate. Common Causes For: U1634 U1634: “Vehicle Communication Bus Malfunction” Faulty CAN bus wiring or connectors Malfunctioning CAN bus…
U1636 – BCM Communication Failure
The ODBII code U1636 indicates a communication failure between the Body Control Module (BCM) and other modules in the vehicle’s network. The severity of ODBII code U1636: “BCM Communication Failure” is generally considered moderate to severe. Common Causes For: U1635 CAN Communication Bus Fault. Faulty Body Control Module (BCM) Poor electrical connections or wiring issues…
U1637 – Invalid or Missing Data for Vehicle Speed.
The ODBII code U1637 indicates that the vehicle’s control module has detected invalid or missing data related to vehicle speed, which may affect the performance of various systems. The severity of ODBII code U1637 is moderate. Common Causes For: U1636 U1636: “BCM Communication Failure” Faulty vehicle speed sensor Damaged wiring or connectors Poor ground connection…
U1638 – Vehicle Communication Bus Malfunction
The ODBII code U1638: Vehicle Communication Bus Malfunction indicates a problem with the communication between the vehicle’s control modules, which may affect their ability to exchange data properly. The severity of ODBII code U1638 is moderate. Common Causes For: U1637 Invalid or Missing Data for Vehicle Speed. Faulty OBD-II connector Damaged wiring or connectors in…
U1639 – Invalid or Missing Data for Vehicle Speed.
The ODBII code U1639 indicates that there is invalid or missing data related to the vehicle speed, which may affect the vehicle’s performance or systems that rely on speed information. The severity of ODBII code U1639 is moderate. Common Causes For: U1638 U1638: Vehicle Communication Bus Malfunction Faulty vehicle speed sensor Damaged wiring or connectors…
U1640 – Lost Communication with Body Control Module (BCM).
The ODBII code U1640 indicates a loss of communication between the vehicle’s control module and the Body Control Module (BCM), which can affect various electrical systems and functions. The severity of ODBII code U1640 is generally considered moderate to high. Common Causes For: U1639 Invalid or Missing Data for Vehicle Speed. Faulty Body Control Module…
U1641 – Lost Communication with Body Control Module (BCM).
The ODBII code U1641 indicates a loss of communication between the vehicle’s control module and the Body Control Module (BCM), which may affect various electrical functions and systems in the vehicle. The severity of ODBII code U1641 is generally considered moderate to high. Common Causes For: U1640 Lost Communication with Body Control Module (BCM). Faulty…
U1642 – Body Control Module Communication Failure
The ODBII code U1642 indicates a communication failure between the Body Control Module (BCM) and other modules in the vehicle’s network, suggesting a potential issue with wiring, connectors, or the BCM itself. The severity of ODBII code U1642 is moderate to high. Common Causes For: U1641 Lost Communication with Body Control Module (BCM). Faulty Body…
U1643 – Lost Communication with Body Control Module (BCM).
The ODBII code U1643 indicates that there is a communication failure between the vehicle’s control module and the Body Control Module (BCM), which may affect various electrical functions and systems in the vehicle. The severity of ODBII code U1643 is generally considered moderate to severe. Common Causes For: U1642 U1642: Body Control Module Communication Failure…