The automobile dictionary meaning of the car engine P1376 Code is p for Powertrain Code Problem is related engine, transmission and emissions systems. 1 for MFG – Manufacturer Specific. 3 for IC Module 4X Ref Circuit Intermittent, No Pulses. 7 for Vehicle Speed Output Circuit and 6 for Cruise Control System – Vehicle Accel Too High. The engine P1376 code is a type of powertrain problem and this problem can be fixed easily. Deactivation of cylinders is achieved by releasing a synchronizer pin that usually interlocks the cam follower and rocker arms. The engine P1376 code resolutions the synchronizer pin is released using hydraulic heaviness which is measured by a enthusiastic solenoid.