An example of the importance of checking for TSBs or technical service bulletins, is if you have a Honda Accord, bulletin #01-164 may apply to you. TSBs are also called manufacturer communications.Other ECT engine coolant sensor and circuit related DTCs include but are not limited to: P0115...
My check engine light came on and code P0300 came up and I was told I needed new spark plugs and wires. I had those replaced and the car ran terrible so I took it back. They informed me that they had crossed the coil wires and fixed it. The light was out and the car ran fine...