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To close the loop. Drove awhile, heated cat, egr and fuel system still not ready. Egr went ready on the way to the shop. Local independent found no errors. Flashed the PCM/ECU with newest software release and tightened a Positive battery terminal that could be moved by hand. He thought that could cause an issue. $255 dollars for diagnosis and flash. I wasn’t convinced.
Less than 70 miles later, all monitors ready. Happy as a clam. Not sure what made the difference. I will say the fuel system was the last one to go green. The heated catalyst turned right before. EVAP went green after sitting overnight.
So, the Fuel System monitor does not change immediately at startup even though it’s called ‘continuous.’ Documented for posterity.
Here are some screen shots. The next to last counter (Secondary O2 sensor monitor) turned from 3 to 4 and then all monitors were ready.
I think my take-away from this is I need to just be patient. I thought after a couple days of regular driving I would be read for I/M, but several things still show as "INC" in my OBD scanner. I have 30 days to complete my test, so I'll just keep on trucking for awhile before worrying too much. . .
03-31-2023, 01:53 PM
