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Limp-Home Mode when put into Park 850 1996

posted by  someone claiming to be Steve in Beacon on  Mon Oct 23 09:18 CST 2023 [RELATED]

Hi folks

Can anyone help me figure out what is causing my '96 850 automatic transmission to go into limp home mode within five seconds or so of being placed into Park? If I avoid Park (start and end in Neutral), I can drive around all day with no issues, although Low will sometimes trigger it. The code is invariably for a fault with the PNP switch.


So far:
replaced and adjusted PNP switch (twice)
replaced transmission CPU
adjusted shift cable at the transmission end
replaced (ugh) transmission with claimed good unit from salvage yard

Again, the code is set by putting the transmission in P (and sometimes L) only. No other issues, shifts great, can drive all day.

Anyone have any ideas?






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New Limp-Home Mode when put into Park [850][1996]
posted by  someone claiming to be Steve in Beacon  on Mon Oct 23 09:18 CST 2023 >


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