I'm having both of my pre-cat O2 sensors replaced under warranty this Thursday...(m)
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I'm having both of my pre-cat O2 sensors replaced under warranty this Thursday...(m)
... can I expect any noticable performance differences (e.g. would these have caused any performance problems)? I've only had the car for 2 months and, as far as I can tell, these sensors have probably been bad (or dying) that entire time. There is no CEL, but my VAG-COM shows 2 codes (B1, S1 Internal Resistance Too High, Intermittent; B2, S1 Internal Resistance Too High, Intermittent); I forget if it was "...too high" or "...too low", but you get the idea.
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