Cadillac Owners Forum banner
  • Hey everyone! Enter your ride HERE to be a part of this month's Ride of the Month Challenge!

1 - 4 of 4 Posts

·
Registered
Joined
·
18 Posts
Discussion Starter · #1 ·
I have a 2003 DTS. Over the past year and a half I have had to replace or have replaced the firewall side ignition cassette, intake manifold plenum gasket, and the cat. So I guess its no surprise that check engine light now reports: P0151.OBD 2 says this is bank 2 sensor 1 low voltage. Can anyone tell me which sensor this is. Thanks
 

·
Administrator
2002.5 F55 CORSA STS, 2014 Explorer XLT FWD
Joined
·
72,798 Posts
Bank 2 is the front (left) bank. Cylinders 2,4,6,8
Bank 1 is the rear (right) bank. Cylinders 1,3,5,7.

Depending on the year model, O2 sensors:

B2S1 is the left exhaust manifold sensor
B1S1 is the right exhaust manifold sensor
B1S2 is a pre-cat sensor
B1S3 is an after-cat sensor (BUT if there is no pre-cat, then this becomes B1S2)
 

·
Registered
Joined
·
18 Posts
Discussion Starter · #4 ·
Thank you gentleman, I'll get under and take a look. If I remember, you had to remove something to gain access to the front exhaust manifold on my 97 DeVille.
 
1 - 4 of 4 Posts
Top