A code reader that will work on the OBD I system.
After repairing the cause of the code, you clear the code with a scan tool.
Trouble code P0101 means:Mass or volume circuit range performance problem
Trouble code P0719 means: Brake Switch B Input Circuit Low
What does obd code P0740 mean
Should be OBD I, OBD II is 1996 and newer
Trouble code P1111 means: IAT Sensor Circuit Intermittent Voltage High
The code number is P0440 not 1744 see: http://www.obd-codes.com/forums/2669-obd-codes-2001-chevy-cavalier-p0440-evap-code-check-enginehelp.html
OBD1
It is 0BD2 system
problem with the coolant sensor check the connection on the sensor reset your OBD I code if that don't work replace the coolant sensor
if it was manufactured after '96 it should have an OBD II port located underneath the dashboard near the steering column. take an OBD II scanner and find the code that was tripped and reset it.