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2004 Cadillac SRX O2 Sensor

Tiny
GAHOTMAMA
  • MEMBER
  • 2004 CADILLAC SRX
  • 6 CYL
  • AUTOMATIC
  • 123,000 MILES
I have a 2004 Cadillac SRX and the Check Engine light came on, so I took it to Auto Zone to have it checked it said that the Oxygen Sensor Bank 2 Sensor 1 was reading too high. Where is this sensor located? Also I was told that if I put an injector cleaner in with my gas that it could possibly fix the problem. What is your take on that?
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Wednesday, July 13th, 2011 AT 2:50 PM

4 Replies

Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
What was code in Poxxx format? See diagram
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Wednesday, July 13th, 2011 AT 3:05 PM
Tiny
GAHOTMAMA
  • MEMBER
  • 2 POSTS
The problem code that I got when Auto Zone checked it was P2234. The definition: it gave was HO2S heated oxygen sensor signal circuit shorted to heater circuit. Bank 2 Sensor 1

Explanation: the ECM has detected the HO@S21 signal is higher than expected.

Probable Cause: 1-Shorted HO2S21 circuit 2-Failed HO2S21
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Wednesday, July 13th, 2011 AT 4:50 PM
Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
Then replacement is in order
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Wednesday, July 13th, 2011 AT 5:36 PM
Tiny
TREY55
  • MEMBER
  • 1 POST
Where is this sensor located on driver side or passenger side
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Friday, January 27th, 2012 AT 2:06 PM

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