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Fault codes from sensors that does not exist

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9 hours ago, Loren said:



My advice is to clear all the codes - drive the car -and see which ones come back.

Codes like the P1602 are leftover from a battery change or when the battery was disconnected.

Report back which codes came back.


I know that the P1602 are from me disconnecting the battery ?

I have cleared the codes several times but the P1397, P0140, P0160, P1117 and P1121 always comes back

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I've never heard of anything like that before.  The only thing I can think of is that the program is corrupted, or the DME is faulty.  I guess you could try getting it re-flashed.  Sorry - not much help.

I assume that the car runs fine, and you don't have a CEL.  As the RoW 2.5's aren't OBD2 compliant, many of the fault codes don't throw a CEL.

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You'll need a PST2 or PIWIS tester, and the Porsche IPAS security codes for your car.  I once updated the fuel map in the DME of my 996T and it was fairly straightforward. 

Just a note of warning.  Yours is DME5.2.2 and a lot of clone PST2s don't have good OBD2 cables.  When programming 5.2.2 the software applies a voltage to one of the OBD2 pins during the programming routine.  A lot of clone cables don't have this connection.  Therefore I would go to a reputable specialist, or someone who has done it before.  It is also likely you will have to go to a specialist for the IPAS codes, as Porsche are reluctant to give them to individuals.

There may be other methods of flashing the fuel maps without the codes (as tuners do) but I don't know if they can change it from US to RoW.

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