Monthly Archives: January 2017

De-coding vs. Diagnostics

There is no end of Auto parts stores willing to DE-CODE your Check Engine Light fro FREE with a slant toward selling more parts.  Many will say "de-code" is "diagnosis". It is not! All vehicles sold in the United States after 1994 were required to have a vehicle information port (OBDII port).  This port enables anyone with a device to read trouble codes stored in the computer. This might include the primary computer or ECU(electronic control unit), the BCM(body control module), the TCM(transmission control module), and others.  Each of these units can store a multitude of codes. Some codes are related and some are indicating other switches and sensors throughout the electronic control systems. Most are connected to a dash warning light, CEL(check engine light), SES(service engine soon), and in some cases a symbol that resembles an icon or action. Other warning lights in the dash may include SRS(safety restraint system), TCS(traction control syste ... read more