Confusing O2 reading

[QSC]

Having read up on how to check your narrowband O2 sensor reading, I am now confused as to why it is reading 0.03 volts from the OX1 pin on the diagnostic panel, when the How To article says it should be approx 0.7 - can anyone shed any light on this ?

 

Testing the battery shows the correct 14.3 volts.

[Ian C]

The sensor is bust? Are you experiencing poor fuel economy and failing emissions tests?

 

-Ian

[QSC]

Ah - welcome to the grandmaster of things O2 related - I am experiencing rather poor fuel economy, but, alas, I go to one of those friendly garages that politely ignores the emissions test -

 

overnight soak in lemon commencing anyway -

[Ian C]

It sounds like it's reading no signal at all rather than just a low one, so it might be a terminal sensor or it might be a wiring issue, but the lemon soak move is a very good cheap first stab at fixing it

 

Don't ignore emissions tests, they can be very handy at diagnosing problems Just don't submit the results to the red tape brigade

 

-Ian

[QSC]

It sounds like it's reading no signal at all rather than just a low one, so it might be a terminal sensor or it might be a wiring issue, but the lemon soak move is a very good cheap first stab at fixing it

Cheap ? 28p that cost me + £4.49 for a deep socket

 

Don't ignore emissions tests, they can be very handy at diagnosing problems Just don't submit the results to the red tape brigade :

Thanks for the advice, it's just the hassle of re-fitting the cat I can't be bothered with