2003 VW Passat Wagon V6 Fault Codes P0300-P0306 and P1491/P1492: Diagnosis and Repair Cost Guide

Model: 2003 VW Passat Wagon V6 Fault Code: P0300 Posted: 2018-01-17 17:51

My 2003 VW Passat Wagon with a V6 engine has been showing intermittent check engine light activation, accompanied by fault codes P0300 through P0306 (indicating random misfires) and P1491/P1492 (related to the fuel system pressure sensor). I'm looking for advice on the first steps to diagnose the issue and an estimate of repair costs. What should I check first, and how much would a professional fix typically cost? Thanks!