Hi Guys,
Im currently getting the following error when I read the fault code off my clio 182...
P0420 Powertrain Catalyst system efficency below threshold (bank 1)
Ive been monitoring the O2 sensors and im not sure if they are functioning correctly.
From what ive read id expect the first sensor to be fluctuating from 0.1 - 0.6? and the second sensor to remain constant at about 0.4? However the first sensor seems to bounce all the way up to 0.9 sometimes and doesn't really have any pattern to it (or a very rough up and down pattern!) at one time going down the motorway the sensor was stuck at a constant 0.7.
Also most of the time the second sensor was constant at 0.4 however it did climb to 0.7 at one point and stuck there for a bit?!
Does this mean I should try replacing the pre-cat sensor?
The car does have a K-Tec exhaust system with sports cat.
thanks!
Dave
Im currently getting the following error when I read the fault code off my clio 182...
P0420 Powertrain Catalyst system efficency below threshold (bank 1)
Ive been monitoring the O2 sensors and im not sure if they are functioning correctly.
From what ive read id expect the first sensor to be fluctuating from 0.1 - 0.6? and the second sensor to remain constant at about 0.4? However the first sensor seems to bounce all the way up to 0.9 sometimes and doesn't really have any pattern to it (or a very rough up and down pattern!) at one time going down the motorway the sensor was stuck at a constant 0.7.
Also most of the time the second sensor was constant at 0.4 however it did climb to 0.7 at one point and stuck there for a bit?!
Does this mean I should try replacing the pre-cat sensor?
The car does have a K-Tec exhaust system with sports cat.
thanks!
Dave