I have the manual out if you want to call
518-538-7123
Above codes are correct..
P0190 - there are 6 possible causes, but the sensor looks for 20-60 psi..
the P1268 then references HL8 -Check the primary or secondary fuel injector for self test DTCS
HL section is the Dual-Injection Fuel Delivery System...has you check the injectors