what is P0420 Catalyst System Efficiency Below Threshold ? as you can see this is my first time reading ecu codes and stuff. Thanks in advance
Check your catalytic converter…that’s where I would start. It could be clogged.
Thanks.
what is P0420 Catalyst System Efficiency Below Threshold ? as you can see this is my first time reading ecu codes and stuff. Thanks in advance
Check your catalytic converter…that’s where I would start. It could be clogged.
Thanks.