The B1656 Code has different meanings and it is compulsory before solving the problem of the engine get the meaning. The dictionary meaning of the code is important thing and from the meaning of the dictionary, you will get idea of the problem. Meaning of the code is B for Body Code Problem is antilock brake system, electronic suspension and steering systems. 1 for MFG – Manufacturer Specific. 6 for Vehicle Speed Control and Idle Control System. 5 for TP Sensor Learn Not Complete and 6 for Cruise Control System – Vehicle Accel Too High. Test drive is the best way to identify the problem exists or not.