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P1648

ECM KS self test failure

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: –Maximum ignition retard –Maximum engine speed reduced

Common causes

ECM Failure
ECM self-test malfunction
possibly caused by the ECM itself

Quick checks

Confirm freeze-frame and conditions when the code set

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