The automobile meaning of the engine P0187 Code is not necessary thing and it is P for Powertrain Code Problem is related engine, transmission and emissions systems. 0 for SAE – Generic. 1 for Transmission. 8 for Exhaust Gas Recirculation System Valve 1 and 7 for Cruise Inhibit Control Circuit. The powertrain problem of the engine is not difficult job to fix. The engine problem is easy to solve by the car engineer if he get the real meaning of the code. The real meaning of the engine code is found in the car engine manual. Do not drive the car with any problem in the car engine.