|
Quote:
Originally Posted by machex3
if it's of any help the code i was given is p0420
code p0420 means the O2 sensor after the cat is detecting that the cat is not working as efficiently as what specs require it to.
The simplest thing to do is to reset the code and see if it comes back.
Next step is to measure the voltage at the oxygen sensor on Bank 1 (the rear sensor, or the sensor after the converter). The voltage should be low and steady (~200mV, depends on the vehicle). If the voltage varies (e.g. 100mV to 600mV) then it's time to replace the catalytic converter. In fact, it would be a good idea to test each oxygen O2 sensor while you're at it.
One thing to note is that many vehicle manufacturers offer a longer warranty on emissions-related parts. So if you have a newer car but it's out of it's bumper-to-bumper warranty, there still may be warranty on this type of problem. Many manufacturers give a five year, unlimited mileage warranty on these items. It's worth checking into.
A code P0420 may mean that one or more of the following has happened:
Leaded fuel was used where unleaded was called for
An oxygen sensor is not reading (functioning) properly
The engine coolant temperature sensor is not working properly
Damaged exhaust manifold / catalytic converter / exhaust pipe
Retarded spark timing
FYI, the search button is a great thing on the forum, if you have a problem try a search first, odds are it's been discussed before. G/L and let us know how it goes...
Rusty
__________________
:SOLD:Pewter Altima 02 3.5SE 5MT Sport/Leather Loaded
To buy myself a 06 350Z Enthusiast :)
:SOLD: 1997 Ext Cab XE Pick-up 2-19-06
:SOLD: 1986 KC 4x4 Pick-up 2-15-06
To buy the wife a Saturn... :(
|
Linear Mode
