REPLACE 02 SENSORS... TURN LIGHT OFF MANUALLY... ENDS UP A TEMP. FIX...
Great question, why not use a real scan tool and scan it
the tools is like $10 (ask)
when cold and damp all bad high voltage ignition system fail.
from the tin lizzy 1920s to 2015, (for the same REASON)
but today the scan tool helps you with that.
my guess the car has never been turned up this decade.? like most here?
FAIL EMISSIONS, sure, if the CEL glows running you FAIL.
in every state in USA, you fail; (this is a USA forum)
2003 wrangler with the 2.5L or what engine? 4.0L I-6 (inline 6 banger)
not posting engine and the talking smog is a hopeless to all but
i can wax , physics and laws or Otto Cycle , generic.
the engine will fail smog for many reasons, Ill ;list some.
top fails.
post back with facts and we can go as deep down the rabbit hole
and take the red pill (complexity path)
hints
if engine has COPS get new boots,.with spark plugs
if engine has a 4 wire coil pack, get new wires, and dont mix them.
remove 1 by 1. not mixed.
cops are engines with DIS that use, COIL OVER PLUGS>
the boots are cheap the cops not.
so boots we do, (savvy) first.
never TUNED up, doing the 60k miles service list? in the opr, guide?
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