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Most commonly with this p-code is going to be a faulty Ignition Coil for cylinder #2. Check the electrical harness for any signs of loose or broken wires. If the visual inspection checks ok, suspect a faulty ignition coil. While the ignition coil is removed, it is always a good idea to check the spark plug for visual defects as well (worn diode, cracks in porcelain, etc.). Cylinder #2 is in the front of the engine, closest to the passenger's side.