Questions & Answers for: honda code p0420

...code. I would recommend a set of honda plug wires and plugs if the P0420 code returns. I have used bolt in aftermarket bolt in catalytic converters but don't remember the brand name they fit ok and i ...

code P0420. What does this mean? Engine code comes up in my 'o2 civic coupe. My OBD11 scanner says code P0420 Generic Catalyst efficiency below threshold (Bank 1). Do you know what's wrong with my car

need info on codes PCM.P0134 and P0420 The check engine light has been on for about 2 weeks Both codes are for the oxygen sensors. P0134 oxygen sensor on bank #1, sensor #1 is bad. P0420 oxygen sensor

...Honda Odyssey bought used with engine light on (without having passed emissions check) with about 98K miles. After having catalytic converters replaced the engine light returned. Had both O2 sensors ...

...Honda Odyssey p0420 Error Code Hi, My check engine light of my 1999 Honda Odyssey came on recently. The error code read was p0420. Wondering whether this has to do with Catalytic Converter or the O2 ...

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 IN HONDA ODYSEY CAN SOMEBODY TELL HOW TO TRUBLE SHOOT THIS TWO CODE P0401- Bad EGR valve P0420- Most likely cause is a bad O2 sensor(s) at the catalytic converter P0401 is exhaust gas ...

...code P0420 catalyst system efficiency below threshold. ( catalytic convector ) any 0800 codes are automatic trans-axle system malfunction. code P0845 problem in 3rd clutch transmission fluid pressure ...

...HONDA CIVIC LX 1998 WITH 122,459 MILES AND I TOOK IT TO AUTOZONE AND THEY GAVE ME THE CODE P0420 THE CAR RUN GREAT BUT THE MUFFLER IT HAVE A WEIRD SOUND. P0420 Catalitic convertor needs replaced, if ...

...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 ...