P0403 Code from Durametric Scan

[jagman1]

Need some help with a P0403 "Misfire detection failure." code.

 

No check engine light, no obvious misfires at idle or at speed, car runs fine. Code won't clear with engine running. Clears with engine off, but returns after startup.

Anyone have any tips or access to the Porsche troubleshooting guide for that code? Thanks!

Car is an 2011 Carrera S Cab. 23K miles. 1 year old plugs.

 

 

[JFP in PA]

Need some help with a P0403 "Misfire detection failure." code.

 

No check engine light, no obvious misfires at idle or at speed, car runs fine. Code won't clear with engine running. Clears with engine off, but returns after startup.

Anyone have any tips or access to the Porsche troubleshooting guide for that code? Thanks!

Car is an 2011 Carrera S Cab. 23K miles. 1 year old plugs.

 

Are you sure on the code number?

[jagman1]

So... Yes I'm sure on the code. But I just spent a few hours on Porsche's tech info site and that code is not listed for the DFI 997.2 engines.

This leads me to believe that there is a glitch in durametric that is reporting the wrong code.

[Loren]

Do you have a CEL?

Does the engine run rough?

 

If not, I would ignore it.

[JFP in PA]

So... Yes I'm sure on the code. But I just spent a few hours on Porsche's tech info site and that code is not listed for the DFI 997.2 engines.

This leads me to believe that there is a glitch in durametric that is reporting the wrong code.

 

That was were I was coming from.  Actually, there was a report of a "typo" in the Durametric software that reported codes with transposed digits for some codes.

 

I would suggest two things:  1 Recheck the car using a loaner OBD II scanner from an auto parts store, many do this for free, and see what codes it sees.  2 Contact Durametric and let them know exactly what their system found and what the OBD II system saw.

 

I would also like to know what you find as well.  You may have something minor that the system is misreporting.

[Silver_TT]

Agree, a quick 5 minute call to Durametric could shed a lot of light -- they are easy to reach and very helpful, so if this is a known bug I'm sure they can give you some useful info.

[jagman1]

Thanks for all the replies and advice.  I've contacted Durametric and they have been very helpful.  Now it's up to me to send them a log that reports what's going on.  I'll get to that as soon as I can.  

 

In the meantime I tried my generic obdII scanner that I've had for >10 years.  It didn't work on the 997.  It displayed "Fail".  It's made by Actron, but is so old that it probably doesn't support the SDI3 Siemens ECU.  

 

I'll keep this thread updated with whatever I discover.