I have a 2007 Audi A3 Sportsback with the 2.0 140ps 16v tdi engine & DSG box. I have owned the car for four years and it has run flawlessly. The car has 115k miles and has been regularly serviced, initially by Audi and latterly by myself, the cambelt was changed at 70k by Audi and other servicing has included oil and filter changes (using vw507 oil) every 7k or so, DSG oil change at 80k, air filter change every 20k, a new ABS/ESP modulator pump at 110k and a new battery 2 months ago.
Earlier this week, the EML light appeared and after scanning with VCDS I found a couple of DTC;s related to the throttle body P3103 & P0691, additionally one of the fuses next to the battery was blown apparently confirming a faulty throttle body. Despite these faults the car drove fine although the aircon would sometimes switch into econ mode.
Today I started the car and it ran OK before cutting out completely after 1/2 a mile. In addition to the previous DTC's, IM now getting P3338 - Activation Glow Plug Control Module, P1501 - fuel pump relay short to ground, P3004 - Relay for Low-Output Preheating of Coolant & P3006 Relay for High-Output Preheating of Coolant.
I tried several restarts with no success and called a rescue company. They checked the diesel supply and confirmed nothing was being pumped to the engine, however the fuel pump fuse was OK. I ended up being towed home.
So my question is whats going on? Is the throttle body fault related to the new DTC's or is it a fluke? One issue is that it was absolutely chucking it down when the engine stopped, maybe water leaking into the ecu? I'm tempted to initially try swapping the fuel pump relay and see if this helps. If not the next step will be the fuel pump itself and I'm led to believe the solenoid pump can be swapped relatively cheaply without changing the complete pump and sender unit.
I guess I will need to change the throttle body as well so any suggestions as to a good recon or new source would be good.
All info welcome.
Earlier this week, the EML light appeared and after scanning with VCDS I found a couple of DTC;s related to the throttle body P3103 & P0691, additionally one of the fuses next to the battery was blown apparently confirming a faulty throttle body. Despite these faults the car drove fine although the aircon would sometimes switch into econ mode.
Today I started the car and it ran OK before cutting out completely after 1/2 a mile. In addition to the previous DTC's, IM now getting P3338 - Activation Glow Plug Control Module, P1501 - fuel pump relay short to ground, P3004 - Relay for Low-Output Preheating of Coolant & P3006 Relay for High-Output Preheating of Coolant.
I tried several restarts with no success and called a rescue company. They checked the diesel supply and confirmed nothing was being pumped to the engine, however the fuel pump fuse was OK. I ended up being towed home.
So my question is whats going on? Is the throttle body fault related to the new DTC's or is it a fluke? One issue is that it was absolutely chucking it down when the engine stopped, maybe water leaking into the ecu? I'm tempted to initially try swapping the fuel pump relay and see if this helps. If not the next step will be the fuel pump itself and I'm led to believe the solenoid pump can be swapped relatively cheaply without changing the complete pump and sender unit.
I guess I will need to change the throttle body as well so any suggestions as to a good recon or new source would be good.
All info welcome.
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