E65 2A81 (inlet-VANOS bank2) PUZZLE
Recently I got check engine light on my 05 745Li, INPA scan showed following errors:
- 2A81 Control inlet-VANOS bank2;
- P0020 - "B" Camshaft Position Actuator Circuit (Bank 2).
Issue appeared after changing oil pan gasket, and car runs ok, although feels a little bit sluggish.
So, after visiting mechanic #1 I was told that this is solenoid issue. Before buying a new one I swapped bank 2 / bank 1 intake solenoids - nothing changed.
mechanic #2 checked the wiring (solenoid connections) and told that they are ok, and to diagnose it more he needs to take off valve covers and run some tests with estimated price ~$1000 - just to run the tests with no guarantee that its gonna fix anything. This option wasn't accepted.
mechanic #3 said that the issue is IVM module, which I just bought and replaced, but it didn't help as well.
side notes: I also tried to swap camshaft actuators and put a new camshaft position sensor, but only one (didn't expect to have 2 on each head). The battery is new and registered.
So after doing some online research I'm coming back to version #2 - looks like its something wrong with solenoid wires. Going to take solenoid off and hook it up straight to battery and if it works, next step - will try to find a solenoid harness and replace it......???
Will appreciate any advice.