2006 C280 O2 Sensor Issue - Mercedes-Benz Forum

 
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post #1 of 1 (permalink) Old 05-12-2014, 10:13 AM Thread Starter
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Date registered: May 2014
Vehicle: 1990 Porsche
Location: Lebanon, Ohio
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2006 C280 O2 Sensor Issue

I have a pumping circuit issue on the passenger O2 upstream sensor.

My main issue is that with a new sensor the pumping circuit issue remains. So at this point I basically need to check wiring and or test the ECU output. However, I do not have a wiring diagram so its pretty difficult. Does anyone have access to a wiring diagram of the sensors so I can get to trouble shooting the issue?

Thanks in advance
-Fishey
Fishey is offline  
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