LordVicious

First, sorry for your trouble. These can be hard cars to deal with sometimes. Second, P1341 is a whole lot better than cam position sensor. A new cam actuator and solenoid and you are good to go.

F1Store

Ok, so the mechanic finally called me today and he had done nothing at all to the car since August..., no surprise. But he finally gave me the actual fault codes and my bad it was not the P1341 as I thought, the fault codes are now:

P1602 Supply voltage open circuit
P1397 Camshaft sensor bank 2 short to ground
P0410 Secondary air injection system cylinder (1-3) signal implausible
P1411 Secondary air injection system cylinder (4-6) signal implausible

I guess 1602 is not much to care about since it has to do with the battery being disconnected?

I am a bit more worried of the other ones.
The camshaft sensor is brand new, he has changed it. He can also run the air injection pump thru the software.
According to him everything seems to work fine so it might be a problem with the software since we have the Euro spec engine in a US car. He had no idea that it could be a software issue.

The Porsche dealership can flash the ECU with the Euro software but they are a bit concerned since he put the intake mainfold from the US engine on the Euro engine. The other option is that the shop has a guy that probably can re-program the ECU and remove those fault codes in the software. That would make those faults go away and it would be possible to get the car thru inspection. But it's not the "right" way to do it and if there ever is a problem with them they will never be seen.

The Porsche dealership told me that it might be a good idea to let the shop flash the ECU first and if they mess it up the dealership can always flash the ECU with the original software.

Any thoughts on those fault codes?

Macster

Not sure the significance of having a US intake on the Euro engine. What does the dealer/tech have to say about this?

My advice would be to reprogram the ECU with the proper DME compatible image for the engine in the car and see what happens.

I would not hack the DME firmware to remove/disable the faults.

The camshaft sensor error does not "look" like a DME firmware issue, but like a wiring issue. Any chance the engine swap pinched/cut a wire? Crushed a sensor connector? A connector pin is bent/broken off?

You (someone) needs to go over the wiring/connectors associated with this sensor very carefully to rule out just plain old physical damage vs. software incompatibilities.

5CHN3LL

It would be a cold day in hell before I'd allow the guy to work on (or not work on) my car again...

Good luck, and keep us posted.

F1Store

According to the Porsche dealership, the Euro cars do not have secondary air injection at all, but they think the US intake manifold may be connected to that somehow so they think those fault codes may be a problem but they can't tell since they have not seen the car.
The camshaft sensor - well I can't rule out that it is not a wiring issue, that was what the mechanic thought himself since the sensor is brand new but the software gives the fault code anyway.

I will call the dealership tomorrow again now that I have the fault codes and see what they say.

5CHN3LL..., can't agree more...

6ta1

you'll clear P0410 and P0411 if you switch to Euro maps.

that's what we do here in the US to remove the secondary air injection pump so it should be no problem with your intake

F1Store

6ta1, thanks! That was what I thought, then there is still the issue with the 1397 code.

I spoke to the dealership today and they agree with most on this forum that it is most likely a problem with the wiring since the sensor is brand new. Most likely something must have happened during the motor swap since I did not have the code before.

The best thing to do is to test all wires associated with the sensor, according to the dealership it will take a day at most to sort it out, not weeks and months...

The first thing they would do is to make sure the sensor is working properly, then test all cables and connectors from the sensor all the way back to the ECU.

Ubermensch

I'm glad to hear you're getting somewhere with this. The advantage of a dealership is that they have access to the proper diagnostic information and the necessary troubleshooting guides to help them solve the problem. Many independent mechanics have the same, but plenty of them don't. I know it's difficult to forget about your investment in time or money that you've made with the other mechanic, but you need to focus on what you're losing by not getting this fixed. You're focused on your "sunk" cost and not seeing the "opportunity" cost. Good luck with getting the car back on the road!

Barn996

Can you get your Porsche towed to the dealer since the indy has shown little interest in fixing your vehicle based on what I've read. Then you'll have a running Porsche back after waiting so long for the indy.

DTMiller

You have to ignore any money you have spent with that shop and move on (or seek competent legal advice about your options). But don't let that guy touch your car any more.

F1Store

Ok, so I'm on the indy all the time now. He will reconnect all wiring and have the car running next week so I can pick it up (yeah right...).
He can flash the ECU with the euro software otherwise I will let the dealership do it, that will at least clear the air injection codes.

But the P1397 is what is bothering me a lot. He told me that there was a problem with using the wiring harness from the euro motor so he used the one from my US motor, so he transferred both the intake manifold and the wiring harness from my old US spec motor.

The strange thing is he said something about the US ´99 spec motor only having one connector to the cam position sensor, it can't be right, there has to be two, there must be a sensor on bank 1 and one on bank 2. The euro '01 motor has two..., he told me to Google it which I have not yet done.

But I just found something very interesting in the "The essential companion". The DME 5.2.2 seems to be the original software in the '99 US spec 996 C2 and according to that the P1397 gives CEL in the US. But according to the book, the Euro '01 should have DME 7.2 as standard and there it states P1397 CEL USA: on CEL RoW: off...

Now I am really confused. Would it be possible to just flash it with the correct euro spec software and the P1397 would not give the CEL...? Anyone ever heard of this?

F1Store

Just a quick update, the shop finally flashed my ECU with the euro software and guess what, all codes are gone...

Thanks to all input from you guys, you really helped me out! Awesome forum!
I will finally get my car back after 16 months...

5CHN3LL

Woot! Nice!

RaginBull

Congrats on getting it fixed! I can imagine all the weight lifting off of your chest having to deal with that for the last 15 months.

Soaringman

Awesome