UPDATE: The OBD code that I have is P0200 Injector Circuit Malfunction which has these other codes listed. I do not have a MB test connector so I could use some assistance with the diagnostic test to confirm the items to be check. Thanks, Scott
P1220 Fuel quantity actuator (Y23/1) (signal to fuel quantity actuator)
P1222 Accelerator Pedal Position Sensor (R25/2)
P1223 Fuel rack position sensor (Y23/1/1) (signal from fuel rack position sensor)
P1611 Engine control Module – internal reference voltage (N3/7)
P1613 Engine control Module – internal check for delayed shutoff (N3/7)
P1614 Engine control Module – microprocessor / fuel calculation (N3/7)
P1617 Engine control Module – EEPROM or incorrectly coded. (N3/7)