SOLVED 29E1 and P0174 - Post cat o2 sensors - INPA vid

marseille

Specialist
Jul 1, 2019
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E61 N54
Why are the voltages on the post-cat 02's oscillating? Last row in the video. Vehicular DIY shows his voltage stable @ 0.42 V on both banks.


This log is a closed-loop cold start then switching to sensors.

 
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