Top hose busted antifreeze went everywhere now 0420 and 0430 codes keep coming on.Any thoughts?

Question

We replaced spark plugs because antifreeze got down in coil boots. Replaced fuel injectors . Last night it was smoking white maybe grey and smelled awful  but it has ran great no sputtering nothing. Then at 73 miles engine light came on same codes. We  put platinum plugs in first and got misfire codes also so that's when we changed and this happened. We never had this problem before until this hose busted. Help please.

Answer 1

Hi there,

Couple things, first, check the O2 sensor harness connectors. If there is coolant down in there it might be affecting the way the sensors are working. Secondly, if the the truck overheated because of this, it's possible there is coolant leaking into the cylinders and causing the codes because it would affect the amount of O2 in the exhaust flow.