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early morning when i start my lexus ls430 2002 notice vibration like misfiring so i connect the OBD device which show me a code p0302 i replace the spark plug and the ignition coil too but still the same problem is coming can u guide me what other step should i take
P0302 indicates misfiring on Cylinder #2 (the first cylinder on the passenger-side). Try clearing the DTC with your reader and see if the code returns. If so, follow the procedure below to see if you're dealing with a bad wire harness problem.