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P1609

ECM microprocessor to microprocessor communication failure

Scope: 2.5L/3.0L gasoline · System(s): EMS OBD II · Factory MIL flag: 2 · Default action: ECM Default: –Throttle motor and throttle motor relay disabled –Throttle valve opening set to default value –Idle speed controlled by fuel injection intervention –Idle speed adapti…

Common causes

ECM Failure

Quick checks

Confirm freeze-frame and conditions when the code set

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