Step 1 – Resolve Engine Trouble Codes The first step is to resolve any other codes that may have come up in addition to the P0420; especially troublesome is the P0300 series of cylinder misfire codes. A P0300 code could be related to something in the ignition (spark plug or coil), th...
Toyota P0420 Code: What it Means, Its Causes and How to Fix It Laxman PrajapatiDecember 7, 2023 If you own a Toyota vehicle and have recently come across the P0420 code, then you might be wondering what… P0420 in Different Vehicles Subaru P0420 Code: What it Means, Its Causes and...
A non-working cat basically melted or broken into pieces that it clogged the exhaust and will not let the engine run, a P0420 however refers to the efficiency not being meet, cat is still operational, engine runs and no drivability concern.. you're just polluting NY... non-carb states ...
You can google "OBD2 drive cycle" for generic instructions as to how you can operate your car to allow it to complete all the monitors. Or look in the factory service manual. Catalyst monitor usually involves getting the engine warmed up, then around 10 minutes of steady throttle highway ...
Plus, if your check engine light is on for a P0420 code and you decide not to fix it, another more serious code could be triggered and you'd never know. The MIL lights up whether you have one code or ten! While I have your attention, don't forget to do oil changes as the ...
to go I just haven't put it on the '09 car that's had this check engine light on for the PO420 for like 4 years now That's the only code that's ever there so we've just left it alone gets the same gas mileage all the time so on and so forth here where we live we don'...