Hello! A Co-worker has a -99 110Hp passat tdi. Last wednesday it started going rough when his girlfriend drove to work, just like the injection timing was off, and soon after that the glow plug indicator lamp started to flash. He got the car home on a trailer and weÂ´ve had a look at it yesterday. The car will start fine, but runs rough. The following fault codes were present: 5 Faults Found 17849 - EGR Valve (N18): Open Circuit or Short to Ground P1441 - 35-10 - - - Intermittent 17552 - Mass Air Flow Sensor (G70): Open or Short to Ground P1144 - 35-00 - - 17957 - Boost Pressure Regulation Valve (N75): Open or Short to Ground P1549 - 35-10 - - - Intermittent 17660 - Commencement of Injection Valve (N108): Open or Short to Ground P1252 - 35-10 - - - Intermittent 00741 - Brake Pedal Monitoring 27-00 - Implausible Signal I erased them, and all but the 17552 and 17660 came back immediatly. (maybe i have to start the car for it to throw those codes?). IÂ´m thinking the N75 could not have failed without him noticing it. The MAF could not have failed without him noticing it. I dont know about the EGR and the N108 tho. But iÂ´m guessing the problem is something that these sensors/valves has in common - not that they are all broken. IÂ´ve searched the forum, and found a not about Fuse 34 that are supposed to control exactly these things - but there is no Fuse 34 in this car. Also all fuses seems OK. Any ideas on what could be the problem? Are there any common ground for these things? A power supply they have in common? Or should i suspect the ECU (i find that unlikely).