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P1797

CAN TCM / ECM network malfunction

Documented for: 2.0L gasoline; 2.5L/3.0L gasoline · System(s): TRANS EOBD, TRANS OBD II · Factory MIL flag: 2 · Default action: TCM Default –Fixed 4th gear

Common causes

CAN open circuit fault – TCM to ECM CAN short circuit fault ECM failure TCM failure

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

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