"Robert Lutwak" <Lutwak@alum.mit.edu> wrote:
> Some posters to this group believe it means "time to clean or replace your
> $130 PNP switch."
> Who are you going to believe, two certified Volvo service departments or a
> bunch of web geeks?
If you read the codes, it tells if the PNP switch is the candidate. The
PNP switch problem showed itself in my '95 850 when I would shift the
automatic transmission manually. When I would downshift, sometimes I
got the error. The Error Codes said something like wrong speed ratio.
That could have meant it was the input speed sensor, the output speed
sensor or the PNP switch. In my case it was the PNP switch and it
usually is. Unfortunately the dealer replaced that last. In my case,
since it only did it when I was in "3rd" gear, it should have been
obvious to the mechanic what the problem was. The problem was that the
"service writer" never told the mechanic it only occurred in "3rd" gear.
When a "service writer" starts diagnosing or is too lazy to type in what
the customer reports the problem to be, that is a big problem. The
mechanics are highly trained, the "service writers" aren't. My
dealership goes through "service writers" on a regular basis. The
Cheers, Steve Henning in Reading, PA, USA
Owned '67,'68,'71,'74,'79,'81,'87,'93,'95 & '01 Volvos.
The '67,'74,'79,'87,'95 and '01 through European Delivery.