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2004 Honda CRV Check engine light / 02 Sensor

Tiny
VAZ222
  • MEMBER
  • 2004 HONDA CRV
  • 4 CYL
  • 4WD
  • AUTOMATIC
  • 110,000 MILES
Check engine light diagnosed by mechanic. Advised it needs a new oxygen sensor and wants $400 for the job. I looked online and found it for $198. The problem is that there appears to be TWO oxygen sensors in this vehicle (vin#SHSRD78444U232189).

How do I know which one to buy, as I will be installing it myself.

Thank you VERY much!

Vaz222@aol. Com
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Saturday, July 19th, 2008 AT 9:12 AM

1 Reply

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
The code will tell you! Bank one sensor 1 or 2.1 is before the converter, 2 is after, one deos most of the switching and is usually the one. These are made to last 100,000 miles, you are past that, wouldn't hurt to replace em both!
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Saturday, July 19th, 2008 AT 9:40 AM

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