My 2006 e46 320Cd msport was intermittently losing all power when driving, no matter what gear i was in the power wouldnt go through and i'd start to slow. I then got the CEL so plugged in the OBDII which showed error code P0401, to sort this i cleaned the EGR valve which worked for about 20minutes until the error came back. So i've replaced the valve and it has made no difference. It is now at the point where i can sit in neutral with my foot to the floor on the accelerator and the revs wont go up, they even drop in judders and stall (still in neutral, clutch in, car not moving). Any ideas what this could be? OBDII is saying there aren't any errors but I cant even roll the car downhill without stalling
All help would be greatly appreciated, completely stumped by this
TIA
What tool are you using to scan the engine computer (DDM in BMWspeak)? It’s obviously not sophisticated enough to really see what’s going on. I suggest the OBDFusion app for your smartphone or tablet. There are several good threads on the app in this forum. The app will let you see various data streams which can be helpful in diagnosing the issue.
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