I think I may have a dodgy O2 sensor as the engine light has come on and that's what the code reader is telling me .

I believe my 180 quattro has 2  O2 sensors .

Any one got any first hand grasp of the cost of getting one/both replaced.

I will be using my local indie not main dealer.

Thanks

PS I suspect this may be  why the car was cheap  

To follow up on this , the engine light came on again and I got the same code (02 sensor) which I deleted and light gone.

Will be interesting to see how long it takes to light up again.

According to the SH the after cat 02 sensor was replaced about 3 years ago.

The MOT is due in October so I think I will wait and see if it fails on the emissions readings.   If it does not and the emissions reading are within tolerance then why is the 02 sensor playing up ?

I think I read somewhere the electrical connections deteriorate over the years and can cause the warning light to activate.

Anyone had experience of this ?

Thanks

Jeff 

 

13 minutes ago, jeffreyt said:

To follow up on this , the engine light came on again and I got the same code (02 sensor) which I deleted and light gone.

Will be interesting to see how long it takes to light up again.

According to the SH the after cat 02 sensor was replaced about 3 years ago.

The MOT is due in October so I think I will wait and see if it fails on the emissions readings.   If it does not and the emissions reading are within tolerance then why is the 02 sensor playing up ?

I think I read somewhere the electrical connections deteriorate over the years and can cause the warning light to activate.

Anyone had experience of this ?

Thanks

Jeff 

 

Hi 

 

14 minutes ago, jeffreyt said:

To follow up on this , the engine light came on again and I got the same code (02 sensor) which I deleted and light gone.

Will be interesting to see how long it takes to light up again.

According to the SH the after cat 02 sensor was replaced about 3 years ago.

The MOT is due in October so I think I will wait and see if it fails on the emissions readings.   If it does not and the emissions reading are within tolerance then why is the 02 sensor playing up ?

I think I read somewhere the electrical connections deteriorate over the years and can cause the warning light to activate.

Anyone had experience of this ?

Thanks

Jeff 

 

Hi the dreaded O2 sensor is all to do with tightening up the emissions on fuel injected engines it maintains precise control over the air/fuel ratios, it wont take lot to upset an O2 sensor as it operates within a very tight band so dirt such as oil or cheap fuel will blind it, therefore you can try and clean them by soaking them in white spirit and a gentle clean with a soft brush, I personally just replace them in view of how cheap they have become, that theory fails when you buy a later vehicle where the O2 and Nox sensor are built into one unit then they are £200 north per sensor, the sensor inner is made of various precious metals which pick out contaminant gases and oxygen in the exhaust stream, there is also a heater element in the core which measure the heat of the gases passing through the sensor and its the heater that normally starts to fail as it can't read any changes for a couple of milliseconds therefore throws the light up.

Steve.

Thanks Steve

if they are relatively cheap sounds like I should replace both and see where that leads

Jeff

Please keep us posted on how you get on