Exception in rendering! Message: window is not defined ReferenceError: window is not defined at new c (/tmp/execjs20161208-103658-ru0tfwjs:136:3912) at m.mountComponent (/tmp/execjs20161208-103658-ru0tfwjs:47:15602) at /tmp/execjs20161208-103658-ru0tfwjs:49:31860 at a.r.perform (/tmp/execjs20161208-103658-ru0tfwjs:47:12503) at Object.a [as renderToString] (/tmp/execjs20161208-103658-ru0tfwjs:49:31821) at r (/tmp/execjs20161208-103658-ru0tfwjs:50:21164) at Object.S.ReactOnRails.serverRenderReactComponent (/tmp/execjs20161208-103658-ru0tfwjs:32:6073) at eval (eval at <anonymous> (/tmp/execjs20161208-103658-ru0tfwjs:173:8), <anonymous>:10:23) at eval (eval at <anonymous> (/tmp/execjs20161208-103658-ru0tfwjs:173:8), <anonymous>:17:3) at /tmp/execjs20161208-103658-ru0tfwjs:173:8
Can I use cataclean to help with that code. Pour in gas tank so it can clean sensors?
Are there other codes set? This code, by itself, P0421 indicates that the engine management system detected the catalytic converter is performing below expected standards. This means the engine is sending contaminants (unburned fuel, oil fumes, etc.) down the exhaust, and these contaminants are preventing the cat from working as expected.
Using a cat cleaner may "help" short term, but your basic problem is unresolved. Replacing the pre-cat O2 sensors may help if they are old and not providing good signals to engine management. But again - any other codes will guide you to the source of the real problem.
I would recommend having one of our mobile technicians come to you to perform a Check Engine Light inspection to properly diagnose this problem, get an accurate assessment of damage, and a cost estimate for repairs. YourMechanic.com can dispatch a mobile, professional mechanic to your location for this repair.
Have a car question? Get free advice from our top-rated mechanics.
Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%