DTC stands for 'diagnostic trouble code'. The code is obtained by having your engine computer (PCM) scanned with an OBD-II code reader. Some auto parts stores will do this for free (AutoZone), others charge a small fee. An OBD-II scanner can also be purchased for $100-$300 or so, depending on features (even less on E-bay). Others can cost thousands (Tech-II, etc.), and have software updates annually. I recommend having some kind of scanner if you plan to do any mechanical engine work on a post 1997 vehicle.
alarm
It's transmission related.
Trouble code P0700 means:Transmission control system malfunction
That is a cylinder number eight misfire.
Trouble code P0753 means: Shift Solenoid A Electrical
Trouble code P0753 means: Shift Solenoid A Electrical
Trouble code P0700 means: Automatic Transmission Control System Malfunction
Electric throttle control problem
Trouble code P0733 means: Incorrect gear ratio, fourth gear
Trouble code P0121 means:Throttle/pedal position sensor/switch A circuit range/performance problem
Transmission Fluid Pressure Sensor/Switch "B" Circuit Range/Performance
A po551 code is power steering pressure sensor circuit malfunfunction