1.8t cutting out on idle - open circuit fault codes??

[Gabriel2202]

My car has been out of action for a while as I have been trying to figure out where a squealing noise was coming from.... turns out the worlds smallest hole in a silicone joiner was making it under boost... anyhow this has gone away as i've fitted a fmic. However now my car sometimes cuts out on idle and when it does it won't start for about a minute??

I have scanned and i get the same codes everytime:

18057 - Powertrain Data Bus: Missing Message from ABS Controller
            P1649 - 35-10 - - - Intermittent

18044 - Powertrain Data Bus: Missing Message from Airbag Controller
            P1636 - 35-10 - - - Intermittent

18058 - Powertrain Data Bus: Missing Message from Instrument Cluster
            P1650 - 35-10 - - - Intermittent

17947 - Clutch Pedal Switch (F36): Implausible Signal
            P1539 - 35-00 - -

17949 - Fuel Pump Relay (J17): Open Circuit
            P1541 - 35-10 - - - Intermittent

17645 - Fuel Injector for Cylinder 1 (N30): Open Circuit
            P1237 - 35-10 - - - Intermittent

17647 - Fuel Injector for Cylinder 3 (N32): Open Circuit
            P1239 - 35-10 - - - Intermittent

17648 - Fuel Injector for Cylinder 4 (N33): Open Circuit
            P1240 - 35-10 - - - Intermittent

17646 - Fuel Injector for Cylinder 2 (N31): Open Circuit
            P1238 - 35-10 - - - Intermittent

17834 - EVAP Purge Valve (N80): Open Circuit
            P1426 - 35-10 - - - Intermittent

17956 - Boost Pressure Regulation Valve (N75): Open Circuit
            P1548 - 35-10 - - - Intermittent

17526 - Oxygen (Lambda) Sensor Heating: B1 S2: Open Circuit
            P1118 - 35-10 - - - Intermittent

17841 - Secondary Air Pump Relay (J299): Open Circuit
            P1433 - 35-10 - - - Intermittent

17939 - Camshshaft Timing Adjustment: Open Circuit
            P1531 - 35-10 - - - Intermittent

17840 - Secondary Air Injection Solenoid Valve (N112): Open Circuit
            P1432 - 35-10 - - - Intermittent

17695 - Boost Pressure Control Valve (N249): Open Circuit
            P1287 - 35-10 - - - Intermittent


Are these on the same circuit/loom? Any ideas what they could indicate as a potential problem? I'm worried I may have damaged my map sensor when fitting the fmic.....

Any help is greatly appreciated

[Dalo Harkin]

Well for a start in your Sig it says N249 bypass, do the delete, the bypass is very hit and miss depending on car.

Have you cleared the codes to see what comes back?

[Gabriel2202]

Well for a start in your Sig it says N249 bypass, do the delete, the bypass is very hit and miss depending on car.

Have you cleared the codes to see what comes back?

thanks for the reply, yeah the same codes every time even when i scan immediately after. So i should fit resistors then instead of bypassing... why is it so it and miss?

cheers

[Dalo Harkin]

Hi mate, some cars just don't like it when you bypass the N249, I bypassed mine originally and car felt horrendous so just did the delete and was 1000 times better

[Gabriel2202]

Hi mate, some cars just don't like it when you bypass the N249, I bypassed mine originally and car felt horrendous so just did the delete and was 1000 times better

Cool, thanks man, I've seen a guide which recommends certasin resisters on vw vortex so will do that and hopefully it will be alright. I want to change my fuse box aswell cus the alternator fuse is corroded slighlty and the plastic casing has melted leaving a gap between the fuses

[Gabriel2202]

way to revive a thread but just in case it helps people in the future after spending my spare time going over the electrics  I changed the ignition switch on a whim and that cured the random codes!