Quote:
Originally Posted by engatwork
I recently replaced both upstream O2 sensors on a 2000 S500 and now it is back with upstream sensor issues. I'm getting a fault that indicates the resistance is not correct for the upstream sensors. Unfortunately, I was trying to save the owner some money and purchased the lowest priced ones I could find for the application. Has anyone ever seen this before?
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According to a few websites the oem bosch units are 13642 for front units and 13782. They're about 95/each.
Bosch has universal (15738 front and 15738 rear)ones that you must splice into the harness they're about 20$ cheaper (77/each) than the oem ones. Same sensor just different wiring bits.
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