I have a 2003 BMW 735Li E65 with the N62 32 valve V8 engine. The engine fault light comes on when the engine has been started from cold. I did a OBD scan and got the following fault code: -
'P1065 - Variable valve timing - time out, no signal, CAN Data Bus error'.
I clear the error and reset the light and the fault doesn't re-occur until the next cold start.
I fitted a new Valvetronic (VVT) ECU & voltage supply module 10,000 miles ago to cure a different problem with the valvetronic system so I'm hoping that's not the problem. The problem has only just started and the weather here in the UK has been very cold (near freezing) the past few days. Could the problem be temperature related?
There are 38 different BMW fault codes relating to the valvetronic system alone. I really wish I had bought a Mercedes!
Saturday, December 17th, 2011 AT 3:41 PM