Hi,
I have a 94 850Turbo, auto-transmission with approx 160k.
This morning I was following someone down a hill and rather than ride my brakes the entire time like they were I downshifted from Drive to 3rd.

A few seconds after this the upshift arrow began to blink and Check Engine light was thrown & the ECON/SPORT mode lights were blinking.

At the next few stop & starts it felt as if the transmission was stuck in 3rd.

After work on the ride home the upshift arrow & CEL were still active, but the transmission performed just fine, no issues.

Checked the code: P0730 was the only one. cleared the code.

Should I go ahead & replace the PNP sensor or do I have a more serious issue?

Thanks much.
Regards,
Kevin

 

You should also try to pull codes from the Diagnostic Unit (A1) in the engine compartment. After pulling them, clear them there.

If you still get the 3-2-2 code (Incorrect Gear Ratio), you should go through the steps (page 1 of this thread).

 

update:
cycled through the gears, shifted from Park to Low about 30 times, without the engine running.
cleared the codes
put about 80 miles on since & no issues.
time will tell if this was a one time event.

thanks for the feedback Henry10

 

Hey read this post and would really like to have a copy of that 850 tranny manual. If you could send it to me that would be great. Thanks

 

You can download them at k-jet.org