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2004 Turbo "Faults"

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Hi Loren,

I have seen your comments etc and I must say that I have never come across anyone as educated as you are on Porsche's.

My problem is that I got my car chipped up and since that I have noth PSM and ABS lights on, I was told by the tuner to take my car to Porsche to have these cleared.

I did that and they turned off, as soon as the car was turned on again the lights came back on and could not be cleared permanantly.

The codes are DME Faulty Memory P0102 Hot film MAF sensor.


PSM Fault Memory 5525 Torque transfer from DME disturbed at times.

The guys at Posche couldn't help or they didn't know what to do.

Have you experinced this in the past and if so what would you suggest to rectify the faults.

I thank you for your efforts in advance.


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Thanks - I have a lot folks (and manuals) around me with lots of help.

P0102 is consistent with an open circuit or short to ground with the signal from the mass air flow sensor (MAF).

5525 is a Porsche only code that says it is getting inconsistent readings from the DME as to engine load.

msindi is likely right that it is something your tuner has done in the chipping. A simple test would be to revert back to a standard DME and see if the faults stay gone.

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Its called unichip, we dont have the likes of GIAC and upsolute here in Australia, I can get the FVD unit but I can't justify the price, much more expensive here in Australia.

I sent an email to GIAC head office with no reply yet, I wouldn't mind getting that unit as I have heard nothing but praise so far.

By the way I have seen your car on 6 speedonline and it's hot, very nice car...all the best.

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Thanks to both Loren & MSINDI,

I'm going back to the tuner tomorrow, he's going to upload the original program, from there I will get the faults cleared and retry the Upgrade again, the only thing I can think of is that when the dyno was carried out the tailshaft to the front wheels was taken off, wouldn't this send the Computer haywire with lots of spin at rear with no motion detected at the front?

Could that be the cause of the faults?

Many thanks again...

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  • 2 months later...

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