Fault code index · medium

P1601

Incorrect TCM fitted to vehicle

Documented for: 2.0L gasoline; 2.5L/3.0L gasoline · System(s): TRANS EOBD, TRANS OBD II · Factory MIL flag: 1 · Default action: TCM Default: –Fixed 4th gear

Common causes

Configure TCM using WDS
Configure ECM and TCM using WDS

Quick checks

Confirm freeze-frame and conditions when the code set
Compare live sensor values vs expected (unplugged/biased sensors are common)

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