james'99
Well-Known Member
4 codes. 2 for thermostat 2 p0420 codes something with catalytic efficiency below threshold bank 1&2
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Keep driving. P0500 should come about in some time.
P0420 - Cat is likely on its way out if not already.
Thermostat codes? Which ones? Do you have a thermostat? Maybe its stuck open and not warming up in a proper amount of time.