P0168 & p1190

Question

hi

i have a suzuki swift diesel or DDIS

i am getting above mentioned codes after service i(SVC) have checked all wires and harness and there is no trouble. i have for precaution replaced fuel filter kit and cleaned the fuel pump but i am still getting error. the technician had checked the vehicle and drove it for over 30 km and came back with no issues.

request your assistance.