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2007 Mercedes
I have a 07 Mercedes ML350 that is giving me a hard time. It has codes p0172 right bank self adaptation is at rich limit and p0175 left bank self adaptation is at rich limit. My question is what are the normal voltages of the upstream o2 sensors? I have obtain... Login to read more. 
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| Engine | 3.5 L |
| Trans | 7-speed Automatic (Electronic) |
Vehicle Data
2007 Mercedes-Benz ML350 4Matic 3.5L
| Engine | 3.5 L |
| Trans | 7-speed Automatic (Electronic) |
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