1999 OBD2 Codes P0172,175 and 1633 what to replace?

twilightcall · Post by **twilightcall** » 05 Jan 2005, 16:20

It is a 1999 S80. I pulled the codes and 3 came up. P0172 which is Bank 1 system too rich and P0175 Bank 2 too Rich. Then P1633 which my scanner said Auxiliary something out of range.... That isn't exactly what it said but close. Does anyone know what this means and how to replace this? Thanks.

Post by **matthew1** » 06 Jan 2005, 00:59

If it was an 850 giving those I'd say look at your mass airflow sensor, or for vacuum lines that have come loose from their fittings.

Guest · Post by **Guest** » 06 Jan 2005, 04:23

Thanks. I will still give them a good look. Thanks Again.