The B1884 Code explains the major issue of the car engine and you need to get the right meaning of the code. If you read the manual of your car, you can know the right meaning of the code. This code is available for many car engines but manufactures set the meaning of the code. This code has basic meaning and it is B for Body Code Problem is antilock brake system, electronic suspension and steering systems. 1 for MFG – Manufacturer Specific. 8 for Ignition System or Misfire. 8 for Exhaust Gas Recirculation System Valve one and 4 for Cruise Vehicle Speed or Set Speed Difference Too High.