Índice de códigos de avería · high
P1643
CAN ECM / TCM network malfunction
CAN ECM / TCM network malfunction
Documented for: 2.0L gasoline; 2.5L/3.0L gasoline · System(s): EMS EOBD, EMS OBD II · Factory MIL flag: 2 · Default action: ECM Default: –Speed control inhibited –Maximum engine speed reduced
Common causes
- CAN open circuit fault – TCM to ECM CAN short circuit fault TCM failure ECM failure
- CAN Data Bus ECM / TCM Network Malfunction
- CAN Link ECM/TCM Circuit/Network
Quick checks
- Confirm freeze-frame and conditions when the code set
- Inspect connectors, grounds, and harness for the circuit named in the code
- Check module power/grounds and bus wiring before condemning a module
Typical fixes
- Check TCM/ECM CAN connections