Nissan 370Z Forum - View Single Post

Rooskey · 05-16-2011, 04:19 PM

Well I was cruising around and my service engine soon light came on. My mechanic has a KAL-Equipment obd-II scanner and the code came up as PO420 (catalyst effeciency below threshold). Any idea's on what it may be. I have FI longtubes with stock nismo exhaust.

05-16-2011, 04:19 PM	#1 (permalink)
Rooskey Track Member Join Date: Jul 2010 Location: South Carolina Posts: 974 Drives: 2014 Alpha7 GTR Rep Power: 16	PO420 Exhaust Code? Well I was cruising around and my service engine soon light came on. My mechanic has a KAL-Equipment obd-II scanner and the code came up as PO420 (catalyst effeciency below threshold). Any idea's on what it may be. I have FI longtubes with stock nismo exhaust.