04 Deville Oxygen Sensor

2004 CADILLAC DEVILLE DTS
V8
Avatar
MYDTS04
  • MEMBER
  • 3 POSTS
2004 deville dts. Pulling code P0155, Bank 2 sensor 1. Had it replaced but code still appears. Were there 2 I needed to replace and the location of it ? Also is there a diagram available for this

Thank you
Jul 28, 2011 at 12:41 PM
Advertisement
Avatar
WRENCHTECH
  • CERTIFIED EXPERT
  • 20,761 POSTS
Bank 2 is the left side of the engine or the front of the car. Sensor 1 would be the upstream sensor.
Jul 28, 2011 at 1:04 PM
Avatar
MYDTS04
  • MEMBER
  • 3 POSTS
So is there just 1 sensor and I should be able to replace this myself if I removed that plastic shield at the bottom ?
Jul 28, 2011 at 1:12 PM
Advertisement
Avatar
WRENCHTECH
  • CERTIFIED EXPERT
  • 20,761 POSTS
I don't know what your abilities are or what will be in your way. The sensor just threads into the exhaust pipe.
Jul 28, 2011 at 1:58 PM
Avatar
MYDTS04
  • MEMBER
  • 3 POSTS
I'm pretty handy with the wrench. I can see and touch the sensor looking down into the car. Me standing in front of the engine it would be on my right side since its transverse. Sits under the water pump, because the pump was leaking directly onto it.
Jul 28, 2011 at 2:38 PM
Avatar
WRENCHTECH
  • CERTIFIED EXPERT
  • 20,761 POSTS
Make sure you use a box wrench or socket to break it loose so you don't round it off using an open end wrench.
Jul 28, 2011 at 3:11 PM