clio 1.2 8v fault codes

[glowworm105]

hi guys ive just read the fault codes from my sisters 1.2 8v thats being running very badly, the codes it gave me are PO141 O2 Sensor heater circuit and PO325 Knock sensor so all im wondering is it as simple as it seems, replace the lambda sensor and knock sensor or could there be something more to it any help would be appreciated thanks

 

[MicKPM]

Codes aren't date stamped so you can never be sure what is current vs what is historic.

Normally I'd advise against clearing the codes as you wipe the context information but in this case I'd be tempted to wipe it and take it for a short drive to see which comes back as current then go from there.

Mick
Diamond Motors

 

[glowworm105]

Hi thanks for the reply i actually did clear them but they came straight back

 

[MicKPM]

Both? In that case I'd start by checking/changing if required the H02 as the knock sensor may just be doing its job

 

[glowworm105]

Yes both codes came back , im assuming its the one before the cat that is faulty ? Can i swap it with the one after the cat to get a definate answer as to if it is faulty ? Thanks

 

[MicKPM]

If there's two then yes, in absence of diagnostics swap em over and see if it fixes the poor cold start and idle.

Mick

 

[glowworm105]

Ok thanks for that , the problem isnt cold start or idle there pretty much ok , but it kangaroos very badly when trying to set off with no power but its ok higher up in the rev range when you get it going

 

[MicKPM]

See how it goes but I have a massive distrust for EODB codes ("P" Codes) so if you're still having the problem get it on a proper diagnostic rig.

Mick

 

[glowworm105]

Just an update on this , i ordered a bew sensor went to fit it and it was the wrong one but as i had all my tools out i decided id swap front to back , its still the same made no difference , i still have the knock sensor coming up as a fault so should i try changing this ? What faults would a faulty knock sensor cause ? Im really running out of ideas now but im still sure its something simple