DTC P0440 Isuzu
Lost Communication With Sunroof Control Module (SUNR)
Lost Communication With Sunroof Control Module (SUNR)
Description
The primary communication network between electronic control modules on this vehicle is the Controller Area Network (CAN) data bus system. The Controller Area Network (CAN) data bus allows all electronic modules connected to the bus to share information with each other. Regardless of whether a message originates from a module on the higher speed CAN C (500K) Bus or on the lower speed CAN Interior High Speed (IHS) (125K) Bus the message structure and layout is similar, which allows the Totally Integrated Power Module Central GateWay (TIPM or TIPMCGW) to process and transfer messages between the CAN buses. The TIPM also stores Diagnostic Trouble Codes (DTCs) for certain bus network faults.
Cause and Solution
(D265) Can Interior Bus (+) (125K) Circuit Shorted To Voltage(D264) Can Interior Bus (-) (125K) Circuit Shorted To GroundDtcs
Video Guide
Diagnostic Info
- DTC Code: P0440
- Brand: Isuzu