2012 Expedition P0430 HELP
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2012 Expedition P0430 HELP
I just replaced all 8 spark plugs and ignition coils about a week ago (was getting misfire on 2 cylinders and CEL was on). Truck has 135k miles
Couple days ago CEL came on with P0430 code “Catalyst System Efficiency Below Threshold Bank 2”
Did the misfires mess up the catalytic converters? Or could it be the downstream oxygen sensor just needs replaced?
Couple days ago CEL came on with P0430 code “Catalyst System Efficiency Below Threshold Bank 2”
Did the misfires mess up the catalytic converters? Or could it be the downstream oxygen sensor just needs replaced?
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From: St Louis
Did the misfires mess up the catalytic converters?
Or could it be the downstream oxygen sensor just needs replaced?
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The original codes were “Random misfire”, “Cylinder 1 misfire” and “Cylinder 8 misfire”
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not what I wanted to hear lol
would you replace O2 sensors when replacing catalytic converter since the truck has 103k miles?
would you replace O2 sensors when replacing catalytic converter since the truck has 103k miles?
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so what would you do??
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Hotshot
Joined: Jan 2004
Posts: 19,768
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From: St Louis
Anti-foulers.
I have to have emissions testing performed as a condition of license renewal where I live so the PCM has to be happy.
I have to have emissions testing performed as a condition of license renewal where I live so the PCM has to be happy.
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