1995 850 GLT (non-turbo) engine error codes

gneedham94 · Post by **gneedham94** » 01 Apr 2014, 09:15

Error Codes: P0715, P0172

I took my car to Auto Parts store to get free engine light testing. Upon reading the codes, we could not find the error codes in his database. The engine tester is inside the car above the shifter (OBD II) not under the hood. I have looked everywhere I can possibly think of and had no luck figuring out what the two error codes meant. Any help would be appreciated, thanks.

Error Codes: P0715, P0172

Post by **jose456891** » 01 Apr 2014, 11:14

P0715: Speed Sensor malfunction.

http://volvospeed.com/vs_forum/topic/13 ... ic-tranny/

P0172 System too Rich (Bank 1)

In laymen's terms, you have a bad speed sensor on the tranny. I believe It measures the input shaft speed from the engine. You also have a bad vacuum leak.