Causes and Fixes Nissan U1001 Code: Can Control Network Comm Circuit

How to fix a Nissan U1001 engine code: Can Control Network Comm Circuit The CAN (Controller Area Network) is a protocol that allows the TCM and ECM modules, as well as other devices, to communicate with each other. Possible Causes of a Nissan U1001 Code: Controller Area Network (CAN) communication harness is open or shorted Faulty Transmission Control Module (TCM) Faulty Engine Control Module (ECM) Poor harness ground connection. What to Check Battery Terminal and Cable Relay or Fuse: Wiring Open or Short www.backyardmechanic.org By using this information user assumes all risk of use.