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Been through this now for a couple of years, since California changed its mind and decided that 450 Smarts were not exempt from smog checks. Every single year it starts out with a failed test—I once had to go through several long drives and trips to the smog referee center before it finally gave the required readouts.
There is a VERY SPECIFIC sequence to the "drive cycle" that will reinitialize the onboard computer so that when it is tested for a smog check, the necessary info is available for readout. I've never been sure of what that sequence is.
The image shows the two categories, CAT and HRT, that are still not showing data, despite my first attempt at driving at certain speeds, stopping, and then doing it again to "refresh" the onboard computer.
Does any know, with certainty, what the sequence is? Thank you!
There is a VERY SPECIFIC sequence to the "drive cycle" that will reinitialize the onboard computer so that when it is tested for a smog check, the necessary info is available for readout. I've never been sure of what that sequence is.
The image shows the two categories, CAT and HRT, that are still not showing data, despite my first attempt at driving at certain speeds, stopping, and then doing it again to "refresh" the onboard computer.
Does any know, with certainty, what the sequence is? Thank you!