No apology necessary. Most parts stores will download the codes for free. One simply attaches a “code reader” to an output jack and the “reader” does the work. The code will look like one of the below (these are just examples).
* DTC P0446 EVAP Vent Solenoid Valve Control System
* DTC P0447 Evaporative Emission Control System Vent Control Circuit Open
* DTC P0448 Evaporative Emission Control System Vent Control Circuit Shorted
* DTC P0449 Evaporative Emission (EVAP) Vent Solenoid Control Circuit
* DTC P0450 Fuel Tank Pressure Sensor Circuit
* DTC P0451 Evaporative Emission Control System Pressure Sensor Range/Performance
* DTC P0452 Fuel Tank Pressure Sensor Circuit Low Voltage
* DTC P0453 Fuel Tank Pressure Sensor Circuit High Voltage
* DTC P0454 Evaporative Emission Control System Pressure Sensor Intermittent
* DTC P0455 Evaporative Emission (EVAP) System Leak Detected
* DTC P0460 Fuel Level Sensor Circuit
* DTC P0461 Fuel Level Sensor Performance
* DTC P0462 Fuel Level Sensor Circuit Low Voltage
* DTC P0463 Fuel Level Sensor Circuit High Voltage
I should have mentioned before that it is possible that the root caues was the previous owner “topping it off”. On some vehicles, “topping off” the vehicle can allow gas to get into the vent line, which vents right by the fill pipe, and down into the charcoal bed. Since nothing can breath well through a saturated bed, the loss of pressure will be “read” by the pump handle as a full tank (as if the fill valve has been closed) and the handle will shut off.