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UPDATE :
At the grey wire going from the D-box to the O2 sensor plug :
Multimeter reads 3,143 V very steady most of the time. Some drops could be noticed, very sudden ones (I’d say a tenth of a second long) :
- Once in a while (every 30s to 1min), drops to around 3,050 V. Usually nothing shows on the E% monitoring, and sometimes there’s a drop (small -40%- or big -0%-)
- And a bit less often (every 1 or 2 min), drops to around 2,950 V. Then, but not each time, there is an E% drop (half the time drops to around 40%, other half drops to 0%)
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