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The code P0420 indicates that the catalytic converter's efficiency is below the threshold set by the vehicle's onboard diagnostics system. This often suggests issues with the catalytic converter itself, oxygen sensors, or exhaust leaks. To service this, you should start by inspecting and possibly replacing the oxygen sensors, check for exhaust leaks, and assess the condition of the catalytic converter. If necessary, a diagnostic scan may help pinpoint the exact cause before deciding on repairs.
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What does code PO420 mean and what you need to do service engine soon light on a 2003 Nissan Xterra?
Trouble code P0420 means:Catalyst system efficiency below threshold (bank 1)
What mean Po420 Dode caravan?
Do didn't say which engine you have. The trouble code PO420 is telling you there is a catalystic converter not doing it's job. We need to know which engine and what year you have in order to determine which cat is at fault.
What does enginecodes po420 po430mean dealer says conv needs replaced true.?
I also have a "service engine soon" code P0430 showing in my 2001 Tracker 4 wheel drive. I need to know what this code means so I don't have to pay for the diagnostics test again to fix it. My car is overheating when it idols and I'm unsure if the engine fan is going out or if this is due to the P0430 code.
What does the flashing S on the dashboard means?
service code in computer need scanner to see which one. dealer or reputable service shop
Whats does it mean when your obd ii scanner reads po420 and how do you fix the problem on a 2000 Mitsubishi Galant?
You need to obtain a troubleshooting chart for that code. If I recall, it has to do with the Evaporative system.
What does service code A12 mean on a 2008 Honda Accord?
A means you need an oil/filter change. 1 means you need to have the tires rotated and possible balanced. 2 means you need to change the pollen/cabin filter.
How do you fix code po420 for Chevy s10 blazer?
P0420 = Catalyst Efficiency Below Threshold (Bank1). Sounds like you probably need to replace the Bank 1 (drivers side) Catalytic converter.
What does it mean when a warning light comes on and it reads service 4WD?
you need to service your 4wd. It means that the computer that controls the 4wd has detected a problem and set a code. You will need to have the system checked with a scan tool.
What does service code A13 mean on Honda Civic 2008?
A13 is broken down to A, 1, and 3.A means you have to change your oil.1 means you need your tires rotated.3 means you need to change your transmission fluid.Hope that helps.
02 prizm with 2 codes po420 and po135 i already changed both 02 sensors and the cat engine light is still on and its getting expensive i need help figuring this out?
the po420 could also be a misfire or vacuum leak
What does service code B12 mean on a 2006 Civic and how do you reset the service light when fixed?
B12 means you need an oil and filter change, tire rotation, and air filter replacement.
What does code b mean on Nissan Altima?
It usually means its is a "body" manufacturer specifc code. You will most likley need a good scan tool or service manual (or site) to get any info for it.
