(ECM?) 3000 engine code (intake cam position) [Timing belt off one tooth] Topic is solved

TheMrFailz · Post by **TheMrFailz** » 19 Dec 2018, 13:07

So after a month or two of tomfoolery with my car I've finally got it timed and everything basically fixed... Except for 1 thing. When I scan with my Maxidiag tool I get an (presumably ECM although it's not listed like with other issues strangely) 3000 code and a description relating to intake cam sensor position. One small problamo with that is that uh, I don't have an intake cam position sensor, only exhaust (due to exhaust VVT). I know it's not talking about the exhaust sensor because when I botched that originally it gave a different code (I don't remember which one) specifically mentioning the exhaust code. The car was a total PIA to get firing (didn't want to fire other than the occasional backfire, which I can't blame it after not running since halloween) and shook like hell but after a few attempts it began running and the vibration settled down. All of this leads me to believe that as I saw hinted at in another forum post somewhere, my maxidiag tool might be reading it wrong. Whatever it is, it keeps coming back when I clear it and the car doesn't quite feel right running (it's on stands still so I can't drive it).

Any ideas? 2002 v70 2.4t with exhaust side VVT. Timing is still set where it should be and belt tension hasn't been lost.

Small update: I tried just general OB2 mode and I got P0340. I wonder if the sensor is going bad...

Post by **SuperHerman** » 22 Dec 2018, 20:51

Start by checking the wiring harness carefully. Then you need to test the sensor. Do a search on camshaft sensor testing - there is plenty of material. You should be able to determine if the sensor is bad or something else.

TheMrFailz · Post by **TheMrFailz** » 22 Dec 2018, 22:01

SuperHerman wrote: ↑22 Dec 2018, 20:51 Start by checking the wiring harness carefully. Then you need to test the sensor. Do a search on camshaft sensor testing - there is plenty of material. You should be able to determine if the sensor is bad or something else.

Yeah ended up finding all of that and ran some testing with my multimeter. Nothing in particular was out of the ordinary so I'm assuming the sensor croaked which is... a nuisance to say the least.

Post by **SuperHerman** » 22 Dec 2018, 23:17

What did testing the sensor show?

Post by **abscate** » 23 Dec 2018, 03:52

Remember these scanners read codes from the ECU and the map them to data in the scanner. What you see on the screen is only as good as the keyboarder in Ulan Bator put into the burner that week.

Even my favourite tool, the AUTEL 8xx will report cylinder 8 misfire on my P80 on occasion.

TheMrFailz · Post by **TheMrFailz** » 27 Dec 2018, 09:09

Update: Said screw it and took it to the dealer. Turns out I was a tooth off on each sprocket which was forcing the code (instead of signal too high?). They retimed everything and now it runs fine.

Post by **abscate** » 27 Dec 2018, 11:09

Thanks for follow up MrF.

Added resolution to title of thread. This is one that you need VIDA to catch - reading out the cam positions in real time