The B1485 Code has not any exact meaning and to identify the accurate meaning of the code, you need to read the manual and study well. A professional engineer knows the accurate meaning of the engine problem and this is why, he may need to use some information like model number and manufacturer. The B1485 Code meaning can be understood well after reading manual. Dictionary meaning is B for Body Code Problem is antilock brake system, electronic suspension and steering systems. 1 for MFG – Manufacturer Specific. 4 for Transmission. 8 for Exhaust Gas Recirculation System Valve 1 and 5 for Park or Neutral Position Switch Circuit Engine Torque Signal Circuit.