Help Code p0420 help
02-12-2019, 10:56 AM
#4
before running out and getting a set of new cats, the code is only for the passenger side and it could also just be an exhaust leak or an 02 sensor gone bad..if you change an O2 Sensor its a good idea to change them in pairs (i..e change the matching o non the other side as well)
if you do need new cats the best place to get them is in the classified on here form other members or your local craigslist
anyways good luck and post up how you solved your problem!
if you do need new cats the best place to get them is in the classified on here form other members or your local craigslist
anyways good luck and post up how you solved your problem!
02-20-2019, 06:45 AM
#5
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before running out and getting a set of new cats, the code is only for the passenger side and it could also just be an exhaust leak or an 02 sensor gone bad..if you change an O2 Sensor its a good idea to change them in pairs (i..e change the matching o non the other side as well)
if you do need new cats the best place to get them is in the classified on here form other members or your local craigslist
anyways good luck and post up how you solved your problem!
if you do need new cats the best place to get them is in the classified on here form other members or your local craigslist
anyways good luck and post up how you solved your problem!
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02-21-2019, 01:13 PM
#8
If it were me I'd plan to change the 02 sensors just to be safe but I'd also take a quick look at the spark plugs too as the plugs may have been running hot for a while due to the bad sensor and may be bad at this point too ...changing the plugs if they are bad may even immediately fix the idle and mileage issues even without changing the O2 sensor but it might be temporary if the sensor is not changed too and it may prematurely ruin another set of plugs
02-21-2019, 03:23 PM
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If it were me I'd plan to change the 02 sensors just to be safe but I'd also take a quick look at the spark plugs too as the plugs may have been running hot for a while due to the bad sensor and may be bad at this point too ...changing the plugs if they are bad may even immediately fix the idle and mileage issues even without changing the O2 sensor but it might be temporary if the sensor is not changed too and it may prematurely ruin another set of plugs
04-06-2022, 10:42 AM
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04-28-2022, 06:22 AM
#11
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Just because the cat isn't old doesn't mean it can't fail prematurely.
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Osama_STI (07-01-2022)
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