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P0420 usually points to a failed catalytic converter, if the exhaust system is intact, that is. Exhaust leaks in front of a catalytic converter can affect the O2 readings and at times throw a false code.
P0141 indicates only the heater circuit of the o2 sensor has a problem. Usually it's the element in the sensor, and replacing the sensor would fix that, but it doesn't rule out a harness issue or a short in the wiring
What else can I help you with?
What is code PO420 on a 2000 Chevy Prizm?
catalyst system fault
How much horespower did a 2000 v8 Camaro have?
The 2000 Camaro Z28 had 305 horsepower. The 2000 Camaro SS had 320 horsepower.
What is the horsepower of a 2000 Camaro v6?
on a 2000 stock camaro its 200 hp
How do you fix po420 on impala 3.4?
Po420 2001chevy lmpala
Why does a 2000 Toyota Camry erratic code po420 what can you do about it?
It's Catalyst system efficiency below threshold
Will 1991 Camaro wheel fit a 2000 Camaro?
no it will not
What code is PO420?
Code PO420 is catalytic converter efficiency low bank 1
Can a front end on a 1995 camaro fit on a 2000 camaro what is the diffance?
the lights are different from a 1995 to a 2000 and as well as the fenders
Will seat for Camaro 1994 feet Camaro 2000?
yes direct swap
Will a driver's side door from a 2000 Camaro fit on a 1995 Camaro?
Yes
What is the gap setting for spark plugs on a 2000 Camaro?
.060 is the specified gap setting on spark plugs for a 2000 camaro rs.
What is a PO420 in a 2002 Mercury Cougar?
What is a PO420 in a 2002 mercury cougar: Now if your car is 2.0L DOHC. OBD ll PO420 : Catalyst Efficiency Below Threshold (BANK 1). Hope this helps...
