The B1270 Code has different meanings and it is connected with the model and manufacturer. If you do not study the manual of the engine and car, then it is impossible to fix the problem. The B1270 Code has dictionary meaning. However, the meaning of the code B is Body Code Problem is antilock brake system, electronic suspension and steering systems. 1 is MFG – Manufacturer Specific. 2 is Accelerator Pedal Position (APP) Sensor one Performance. 7 is Vehicle Speed Output Circuit and 0 is Transmission Engaged at High Throttle Angle. You need to solve the problem with help of professional.