Questions & Answers for: Honda Accord p0420 code

...P0420 catayst efficeincy below threshold)and (P1739 manfacturer control transmission) what does this mean? if you have undser 80,000 miles the convert. will be covered under warr. the other code is a ...

...P0420 code (and its the only code). Although the code says that the catalytic converter efficiency is below threshold and something maybe wrong with it, I am not sure if a bad catalytic converter can ...

Code P0420 - what does that mean? The car is an Code P0420 - what does that mean? The car is an 1997 Accord LX with 209,000 miles. Just replaced timing belts, all seals, valve cover gasket, plugs, ...

...code. P0420 is Catalytic converter system code. Could be problem with Catalytic converter plugged up or problem with H02S 2 (Oxygen sensor bank 2) Takes quite a lot to trouble shoot most of these ...

...had a diagnostics and mechanic said that I never say a code call "end of net" before, are you sure? Code are usully PXXXX(example:P0420,P0300, etc...). You might want to have it double check. good ...

...to determine if the cat is working. If it sees the downstream O2 starting to switch back and forth like the upstream O2 or read consistently higher than it should than it will flag the P0420

...properly, it can cause the P0420. If not fixed soon, that can destroy your cataltytic converter. The P1457 code is less important.

i got these two codes: p0420, p0442 on my 2003 honda accord. i discovered that my fuel economy has been quite poor and believe these error codes are responsible for it. i want it solved. these aer ...

...Usually does. But I check the O2 sensors first. Ohm check them and the wires. Your cats are expensive, I don't won't to misdiagnose. Here's a link to your code P0420 solutins. P0420 OBD II Trouble ...

code P0420 emission station 1 2000 honda accord se 2.3 i replaced the crank sensor and the distributor and also bought a new catalyst converter. it is very likely the O2 sensors, , check the O2 ...