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jbirkett jbirkett is offline
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Join Date: Dec 1999
Location: Folsom, CA USA
Posts: 140
Garage
Code P1704 and P1603

Having fun with new(to me) 2002 Boxster S Tiptronic, and at this moment I use 'fun' loosely . I have been fighting various P codes having to do with Air intake and such. I fix one and then another that has been masked pops up, anyway I digress.
Just last week I started getting P1704 Kick-down switch and it won't go away. Now getting P1603 CAN timeout PSM not sending information. I have been using Durametric software and it's been well worth the $$'s, able to see many things that need looking at. The car has 132000+ miles but body and interior in excellent shape, also got it for reasonable price. It's getting a little frustrating since I had little to no trouble with my '84 TL for the five years I owned it, but again I digress.
I haven't been able to find any information on those two codes. I should add that the shifting has become a little erratic. I can put it in 'Manual' mode and shift but when in 'Auto' it will not shift up properly all the time.
I have been reading about changing the Oil, since I don't know if it's ever been done and the mileage indicates it probably should be changed.
Any help would be greatly appreciated.
Thanks,
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John Birkett
2008 Cayman S, Midnight Blue Metallic
84' Factory Turbo Look M-491 (gone but not forgoten)
02' Boxster S, Seal Gray Tiptronic (gone)
Old 06-18-2014, 05:28 PM
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