The B1471 Code is an error code and it appears after diagnosis of the car and engine. After reading the manual, it is possible to solve the problem. The problem is related with the body problem of the engine. MFG – Manufacturer codes what have a ‘1’ as their 2nd digit to specify they are single to a specific vehicle model or make. These singular codes were thought essential by the car producers so they could deliver extra diagnostic information outside the basic list of generic OBD II codes for all types of faults, not just emissions-related errors. The dictionary meaning describes many things.