One problem related to emission control has been reported for the 2006 Volkswagen Passat. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2006 Volkswagen Passat based on all problems reported for the 2006 Passat.
I began to have problems with the engine light. Every time I had it checked, it coded something different (po455, po171, po441) with these results: fuel cap light came on, high pressure fuel pump, evaporative emission control system , and lean bank 02 censor before the catalytic converter. It became hard to crank, and once shook when it did crank. The steering wheel module and comfort control module were replaced in 2008 under warranty after I took Volkswagen to small claims court. I took the car to a dealership in atlanta (there isn't one close to where I live) and they completed the following repairs: code po444, the evaporative emission system purge control valve circuit; code po193, fuel measuring system 2 abnk 1; and p2187 system too lean at idle. Total= $884. 84 ($619. 95 labor; $204. 31 parts; $43. 25 waste disposal charge; and $17. 33 tax). At no charge, they checked the passenger headlight which I had to replace @ twice a year and inspected high pressure pump, gff guided functions and a courtesy visual service inspection.