Help Diagnosing Slew of CEL Codes

[mikefocke]

322 - allocation of exhaust cam and inlet cam do not agree, timing chain out of position.

Fix this problem first before you spend anything on any mods.

[-tWv-]

Originally Posted by mikefocke

322 - allocation of exhaust cam and inlet cam do not agree, timing chain out of position.

Fix this problem first before you spend anything on any mods.

Thanks for the input. Digging into this more it seems like the Porsche shop may have just gone for quoting the high dollar amount fix first instead of actually solving the problem. Misfires seem to be related to the timing issue and then potentially still need catalytic converter delete or replacement to take care of the other codes.

[blue62]

when you get an O2 sensor aging code it is telling you that the sensor is responding slowly. Which is what they start to do as they get get older. eventually their response gets slow enough that the DME throws the code. Unlikely that the cats are causing the problem.

If the O2 sensors are new or recently replaced and you are getting O2 sensor aging codes.
I think there are other issues in play.
Were the codes present before they were replaced?
If so were the codes erased after they were replaced?
If they were replaced recently are you positive they are the right ones for the car.
If they were other than Bosch or Porsche (relabeled Bosch) in my mind things get iffy.
Is all the wiring to them and from them to the DME sound?
Are the connections sound?

I would fix the timing issue first.
In fact if it was me I would not drive or even start the car until the cam timing issue was resolved.
Then I would erase all codes and go from there. But that's me.

[-tWv-]

Originally Posted by blue62

when you get an O2 sensor aging code it is telling you that the sensor is responding slowly. Which is what they start to do as they get get older. eventually their response gets slow enough that the DME throws the code. Unlikely that the cats are causing the problem.

If the O2 sensors are new or recently replaced and you are getting O2 sensor aging codes.
I think there are other issues in play.
Were the codes present before they were replaced?
If so were the codes erased after they were replaced?
If they were replaced recently are you positive they are the right ones for the car.
If they were other than Bosch or Porsche (relabeled Bosch) in my mind things get iffy.
Is all the wiring to them and from them to the DME sound?
Are the connections sound?

I would fix the timing issue first.
In fact if it was me I would not drive or even start the car until the cam timing issue was resolved.
Then I would erase all codes and go from there. But that's me.

Still waiting for my BIL to send all the maintenance records but they put a ton of work into the car over the past few years and as far as I’m aware all parts were OEM. I don’t believe the codes were present prior to replacement, it was more of a preventative maintenance thing at that point but I’ll confirm.

The car has been driven a decent amount since the CEL came on with no major issues, but I’m not sure if the cam timing code was present initially. Definitely going to get the timing issue resolved first like you said and then start diagnosing everything else.

Is there any chance this could be a bad camshaft position sensor? Or does the code I have specifically relate to physical timing being off?

[blue62]

Originally Posted by -tWv-

Still waiting for my BIL to send all the maintenance records but they put a ton of work into the car over the past few years and as far as I’m aware all parts were OEM. I don’t believe the codes were present prior to replacement, it was more of a preventative maintenance thing at that point but I’ll confirm.

The car has been driven a decent amount since the CEL came on with no major issues, but I’m not sure if the cam timing code was present initially. Definitely going to get the timing issue resolved first like you said and then start diagnosing everything else.

Is there any chance this could be a bad camshaft position sensor? Or does the code I have specifically relate to physical timing being off?

I am not familiar with your ICARSOFT scanner brand.
But OBDII was standardized in 1996 so you don't need priority brand scanners to read OBDII codes.
Checking the codes with another scanner to prove your cam timing codes and other codes would not hurt.
Especially if the software is in the more common "P" code format.

Yes there is a possibility that the cam position sensor could be bad.
But I don' like to just change parts without confirmation that they are bad.

What I would do is have the codes read with a scanner that uses the more common "P" code format. Because that is what "I" am familiar with.
So I would have more confidence in my diagnosis.
Then if I got the cam timing code again I would check the timing by aliening the manufactures timing marks for the crank and camshafts. That way I would have physical proof of correct or incorrect crankshaft and camshaft timing.

If all timing marks fell in spec. then I would be looking at things like the cam and crank position sensors.

Setting up the timing marks so you can check them is a little bit of work but I think the only cash outlay is for the plastic plugs that you have to remove to see the timing marks.

[-tWv-]

Originally Posted by blue62

I am not familiar with your ICARSOFT scanner brand.
But OBDII was standardized in 1996 so you don't need priority brand scanners to read OBDII codes.
Checking the codes with another scanner to prove your cam timing codes and other codes would not hurt.
Especially if the software is in the more common "P" code format.

Yes there is a possibility that the cam position sensor could be bad.
But I don' like to just change parts without confirmation that they are bad.

What I would do is have the codes read with a scanner that uses the more common "P" code format. Because that is what "I" am familiar with.
So I would have more confidence in my diagnosis.
Then if I got the cam timing code again I would check the timing by aliening the manufactures timing marks for the crank and camshafts. That way I would have physical proof of correct or incorrect crankshaft and camshaft timing.

If all timing marks fell in spec. then I would be looking at things like the cam and crank position sensors.

Setting up the timing marks so you can check them is a little bit of work but I think the only cash outlay is for the plastic plugs that you have to remove to see the timing marks.

Thanks for the reply. Although this car is intended to be a project car, engine timing is a bit outside my wheelhouse. I am also a bit impatient and want to enjoy the summer weather with my new Boxster!

Have an appointment with a local mechanic on Wednesday to get a diagnosis. I’ll definitely report back as we make progress.

[blue62]

Originally Posted by -tWv-

Thanks for the reply. Although this car is intended to be a project car, engine timing is a bit outside my wheelhouse. I am also a bit impatient and want to enjoy the summer weather with my new Boxster!

Have an appointment with a local mechanic on Wednesday to get a diagnosis. I’ll definitely report back as we make progress.

Hope I have helped in some small way.
Yes do keep us posted.
Hope things turn out well for you.