Search found 2 matches

by Mirda
Sun Oct 03, 2010 2:03 pm
Forum: USB PC Oscilloscopes
Topic: ECU report P0420 - 007 Catalyst efficiency below threshold
Replies: 5
Views: 3791

Re: ECU report P0420 - 007 Catalyst efficiency below thresho

Let me try to clarify. My measurements show the same process as black and white picture. Just do not know what causes the periodic voltage spikes (same as in the figure).That is, if the measurement results are the same as the proper charts, so why not come this disorder(P0420-007)?The color sample c...
by Mirda
Fri Oct 01, 2010 1:31 pm
Forum: USB PC Oscilloscopes
Topic: ECU report P0420 - 007 Catalyst efficiency below threshold
Replies: 5
Views: 3791

ECU report P0420 - 007 Catalyst efficiency below threshold

I have a problem. ECU report P0420-007 Catalyst efficiency below threshold. Measure both lambda (before and after the catalytic converter). Both have a sample course. Just probe the catalyst is different in that it has some kind of regular or needle tip. The first image that I attach is a sample gra...