2003 Toyota Highlander "p0420 p0430" Questions

...p0430 and p0420 codes. (It had been 6000 miles since my last oil change Got oil changed and had them check for loose hoses near air filter but they found none loose) P0420 & P0430 You need new ...

P0420 and P0430. DO the appearance of both 0420 and 0430 indicate that problem is most likely the Catalytic converter? Or might it still be a problem with either or both sensors? Or something entirely

...P0420, P0430.. what could it be. Should I change thermostat, 02 sensor or catalytic converter.. Please advise. PO128 = It is probably a bad ECT (engine coolant temp) sensor. PO420= The problem could ...

...P0430 is just like a P0420, just on bank 2 instead of bank 1 See this post on how to diagnose a P0420...same procedure as a P0430 ...

P0420 and P0430? i was told it was my o2 that needed to be replaced, but theres 4 of um 2 (pre&post)on each side. how do i know if im replacing the rite one? codes p0420 and p0430 are both post o2

...p0420 and p0430 i can clear the codes and they will not return till it fails to start again Definition of Diagnostic Trouble Code P0420 Category: Powertrain Definition: Catalyst System Efficiency ...

P0420 and P0430 are these sensor ? P0420 and P0430 are codes related to the catalytic converter effeciency. The catalyst will need to be replaced $$. I have a P0420 code and it seems to be the cat ...

...p0420 and p0430, how to fix these issue with my 2001 Audi A6 2001 Audi A6 EOBD code: P0420 Fault location: Catalytic converter system, bank 1 - efficiency below threshold Probable cause: Catalytic ...

...p0420 & p0430 code.. 2005 ford expedition 5.4 ,,,, can you please tell me where is located p0010 code, A camshaft position actuator circuit/open bank 1... Same truck .. Thank you p0420 and p0430 both ...

p0430 and p0420 Hi Charlie,Diagnostic Test Codes (DTCs) P0420 and P0430 ar "Catalyst Efficiency" codes.  These simply mean that the catalytic converters in your vehicle are not performing the way