| jmm5777 |
| I need some help in correcting the code P0420. The definition is a "catalyst efficiency low bank 1". My question is, do I need to replace the catalytic converter on bank 1 or should I look further for another problem. The printout I have, list 3 possible issues 1) engine misfire, 2) vacuum leak, 3) engine oil leakage into exhaust. I have 123000 miles so it could be the plugs need repalcing. I also have noticed a clanging noise that I have not been able to pinpoint. Could this be the catalyst melted and rattling in the converter? Any advice would be appreciated. Miffed....... |
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| Homer |
quote:
Originally posted by jmm5777
I need some help in correcting the code P0420. The definition is a "catalyst efficiency low bank 1". My question is, do I need to replace the catalytic converter on bank 1 or should I look further for another problem. The printout I have, list 3 possible issues 1) engine misfire, 2) vacuum leak, 3) engine oil leakage into exhaust. I have 123000 miles so it could be the plugs need repalcing. I also have noticed a clanging noise that I have not been able to pinpoint. Could this be the catalyst melted and rattling in the converter? Any advice would be appreciated. Miffed.......
My guess would be dead cats... do you smell more sulfury smell out of your exhaust ?
Plus... if you haven't replaced your plugs in 123000 miles it might be time anyway. |
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