Each trouble code consists of one letter and four digits, such as P1234. This blog post will teach you how to interpret the meaning of the codes. Format of the OBD2 Trouble Codes System or Category The OBD2 Trouble Codes are categorised into four different systems. Body (B-codes) catego...
open EGR valve, etc.). If the last digit is a number other than zero, it corresponds to the cylinder number that is misfiring. A P0302 code, for example, would tell you cylinder number two is misfiring. Causes here would be anything that might affect only a single cylinder such as a ...