P0420: Is that the driver or passenger side?

[luke87gt]

Thanks,
Luke

 

[CzchMex]

P0420 - Catalyst efficiency low - bank 1

Bank 1 is passengers side

 

[luke87gt]

Thanks for the reply.

Every couple thousand miles I seem to get this code and I have MIL eliminators, which is strange!

 

[CzchMex]

Thanks for the reply.

Every couple thousand miles I seem to get this code and I have MIL eliminators, which is strange!

Researching about the codes I got, people with MIL eliminators seem to trip a CEL when they romp on it hard. Then after a few cycles the light turns off. Maybe this could be happening?

 

[mwolson]

Luke, turn them off in your tune.

 

[luke87gt]

Oversight on my part Mark.
If it keeps coming back I will ask that Don turn it off for me.
Thanks
Luke

 

[mwolson]

It'll take him about 1 minute.