Questions & Answers for: engine code p0420 honda

...engine light came on with 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 ...

...engine D16Y8) has P0420 OBD II code along with misfire on cyl 3 and 4. I changed out the plugs and the distributer cap. Can't get the rotor off yet. Engine running like almost new now despite 178k ...

engine 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

...steady, a P0420 check engine light code is set. Possible Causes: Oxygen (O2) sensor not working correctly Damaged or leaking exhuast (pipe, manifold, catalytic converter) Damaged catalytic ...

...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 on bank #1, the sensor down by ...

engine light was extinguished for one day then it returned. Previous code was P0420 (Emission system below efficiency). Current codes include P0420 plus P1739 (Transmission System problem), and P1456

...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 Sensor? Thanks. Cat ...

...code by turning your engine off, locating fuse number 12 in your under hood fuse box (backup, radio 7.5A) and pulling that fuse for about 10 seconds. If the code comes back, it was not a glitch and I ...

engine code p0420 i have a 2000 honda civic dx and this code came up p0420 they say it's the catalyst converter but i just changed that part on may last year. symptoms when i drive is make noise gas ...

...engine code reader from the local auto parts store and read the O2 sensors with the engine running and noticed the voltages on them were erratic, and they shouldn't be. Mine were reading ~ 0.8 ...