02 C2 Tip OBD fault code - P0710

[david_yorkshire]

Hi all - does anyone have a clue as to what the OBD fault code P0701 relates to ?

I know what the Porsce tester comes up with - 'Impermissable gear ratios'

and the std OBD code is 'transmission control range/performance'

But what does it actually mean ?!

Two Porsche specialists say they've never come across this code before;

The code gets logged approx five seconds after turning on the ignition.

The car drives absolutely fine !

I did have some work done on the gearbox about 4 months ago - but that was a new torque convertor.

Any got any ideas ?

Thanks

David

[Loren]

From what I can tell a P0702 can generate a sub-code (Porsche code only). Here are the sub codes and their meaning:

58 Control module faulty (test internal watchdog)

59 Control module faulty (test external watchdog)

62 Control module faulty (RAM)

63 Control module faulty (ROM)

64 Control module faulty (EEPROM critical for normal function)

All of the troubleshooting says to replace the Tip control module except for code 58 which says to re-program the module. That might be worth a try before replacing it.