$3 o2 simulator fix for p0420 check engine light Check engine light with code p0411... have checked the air pump and it Check engine light code p0449
Check engine light with code P0411... have checked the AIR pump and it
Got a service engine soon light, code p0420, help?
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Check engine light on? here’s what to do
Check engine light is on and codes p0420 and p0430 .
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