Trouble code P1337 means: CKP Sensor (Ref)
This code is related to the CSF Sensor and it indicates NO signal from it. CSF = Crankshaft Speed Fluctuation This sensor connector is located below by the timing belt (under the intake manifold).
Trouble code P0171 means: System Too Lean (Bank 1)
Trouble code P0401 means: Exhaust gas recirculation - insufficient flow detected
Honda code P1457 means EVAP Emission control system leak detected (control canister system)
If you are asking about the radio unlock code you enter it with the radio preset buttons.
Code 700 means: A/T Concerns
By inserting a 5 digit code into the radio by means of the station preset buttons. If you do not have the code then go to the Honda Owners Link and register your Honda. There you can get the code for free.
Code 41 means: HO2S Heater
Code P0172 means: System Too Rich
Code P0780 means: A/T Concerns
what b16 means on a Honda means to replace the vtm fluid on the rear differential