Check primary and secondary ignition
Check fuel system
Fuel pressure and injector
Check for vacuum leaks
Check engine mechanical condition
Engine Light ON (or Service Engine Soon Warning Light)
Fuel System Failure Caused No. 3 Cylinder Misfire is the generic description for the P1203 Acura code, but the manufacturer may have a different description for your model and year vehicle. Currently, we have no further information
about the P1203 Acura OBDII code.