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 Posted: Mon Apr 08, 2013 11:02 am |
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Joined: Apr 03, 2013
Posts: 58
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I ordered one from eBay. Hopefully I manage to fit it easy.
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Posted: Mon Apr 08, 2013 12:08 pm |
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Joined: Aug 01, 2011
Posts: 390
Trade Rating: 0
Location: Bath UK
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As easy as changing a spark plug really
Make sure to reset the fault codes afterwards otherwise it may go on ignoring the flagged sensor, clearing the codes will also reset the fuel trims and allow the ECU to readjust again to using the new sensor
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Posted: Wed Apr 10, 2013 11:55 am |
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Joined: Apr 03, 2013
Posts: 58
Trade Rating: 0
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Well I got it and fitted it today but there is no change, error code is still there which was expected but the car still hangs on to the revs so the fuel problem is still there. Just hope clearing the code will fix it.
Worrying though, the sensor was undone by hand. I was expecting it to be ultra tight as someone told me that they sometimes have to be burnt off. So guess the previous owner must of been in at it.
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Posted: Wed Apr 10, 2013 2:01 pm |
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Joined: Aug 01, 2011
Posts: 390
Trade Rating: 0
Location: Bath UK
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Yes, as stated before, you'll need to reset the fault codes otherwise it just assumes the bad sensor is still there. It'll take a little while to settle in with the best settings to the new sensor too
You're right to be concerned that the sensor was only in hand tight. It certainly suggests someone careless was messing about with it
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Posted: Tue Apr 16, 2013 11:47 am |
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Joined: Apr 03, 2013
Posts: 58
Trade Rating: 0
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Thanks very much for everyone's help.
I bought a diagnostic tool for £10 of Amazon, just plugged it in, hit reset and bye bye "Anti Pollution Fault".
Thanks again.
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Posted: Fri Apr 19, 2013 1:32 pm |
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Joined: Apr 03, 2013
Posts: 58
Trade Rating: 0
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Well the fault is back. I am stumped 
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Posted: Fri Apr 19, 2013 2:11 pm |
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Joined: Apr 08, 2012
Posts: 37
Trade Rating: 0
Location: Newcastle
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Is the problem still there? or is it just the Anti pollution light.
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Posted: Fri Apr 19, 2013 3:02 pm |
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Joined: Feb 07, 2010
Posts: 2949
Trade Rating: +6
Location: Athens, Greece
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If it's a 1.4 TU3 and the revs also hang, check intake/exhaust valve tappets clearance.
It would also explain lack of power.
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| 1.4i, 2001, 3-door, China Blue
Repair safely - Drive safely | |
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Posted: Sat Apr 20, 2013 3:08 am |
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Joined: Aug 01, 2011
Posts: 390
Trade Rating: 0
Location: Bath UK
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The anti pollution warning is a diagnosis over a period of time so by just clearing the fault code then it's just a matter of time before reappears if the fault is still there
First step is to read your present fault codes. We presume your pre cat O2 sensor fault is now fixed so that one should not be reappearing. On a better scan tool you may see freeze frame data which will give more of a clue as to why APF is being triggered.
Ideally, with better scan equipment, you want to see the output traces from your pre cat and post cat sensors to compare them and then you can see what the OBD is seeing and why the APF is on. The OBD wants to see frequent switching from the pre cat and fairly flat trace from the post cat sensor at steady rpm. If the post cat mirrors the pre cat then it shows the cat isn't doing anything
A misfire can also trigger an APF as the O2 sensors will be affected by the excess fuel so look at the fault codes and post them up
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Posted: Sun Apr 21, 2013 11:44 am |
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Joined: Apr 03, 2013
Posts: 58
Trade Rating: 0
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It's a 1.4 Quicksilver, the revs were hanging before I changed the o2 sensor.
That's strange because I tried resetting the codes a few days prior to changing the sensor and it returned straight away, however after I changed the sensor and reset codes the faut was gone. I will plug it in again tonight and see what it says.
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Posted: Sun Apr 21, 2013 12:37 pm |
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Joined: Apr 03, 2013
Posts: 58
Trade Rating: 0
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I just checked, I am getting the p0353 and p0135. First one is something to do with an ignition coil and the second one appears to be the heated oxygen sensor again.
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Posted: Sun Apr 21, 2013 4:22 pm |
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Joined: Aug 01, 2011
Posts: 390
Trade Rating: 0
Location: Bath UK
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P0135 O2 sensor heater circuit malfunction
This is different to fault you had before as this relates purely to the O2 heater circuit and not the signal circuit
I'd back probe the O2 sensor connector, you can use a metal pin, check for power and reference earth at the O2 sensor heater wires,they'll be the two wires that are the same colour. Check the resistance thru the sensor across the two heater wires with sensor disconnected, should be just a few ohms
P0353 is detected misfiring so do you notice misfiring? Freeze frame data could be useful to help you detect when it's occuring
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Posted: Mon Apr 22, 2013 2:53 am |
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Joined: Feb 07, 2010
Posts: 2949
Trade Rating: +6
Location: Athens, Greece
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Misfiring (v.slight and rare), lack of power, poor fuel economy, revs hang, λ-related DTC all ring bells of valve adjustment needed to me..
Also note I've seen heater circuit fault come-up on the 206 only to find that it's 100% working fine in all respects (full tests from ECU continuity, Ω of heater resistor etc) and it was indeed to do with running of the engine by the ECU.
How many miles on the clock?
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| 1.4i, 2001, 3-door, China Blue
Repair safely - Drive safely | |
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Posted: Mon Apr 22, 2013 11:57 am |
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Joined: Aug 01, 2011
Posts: 390
Trade Rating: 0
Location: Bath UK
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I'd still check for power and earth at the O2 heater circuit as you can have continuity and heater element resistance be correct but without power and earth then no current is flowing. If the current is less than 0.1amp then it triggers the P0135 and as someone has been playing about with it then it could easily be just a simple blown fuse.
If the pre cat O2 sensor isn't getting up to temp then the emissions go to pot and you get the APF
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Posted: Mon Apr 22, 2013 1:56 pm |
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Joined: Feb 07, 2010
Posts: 2949
Trade Rating: +6
Location: Athens, Greece
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| Deckchair5 wrote: |
I'd still check for power and earth at the O2 heater circuit as you can have continuity and heater element resistance be correct but without power and earth then no current is flowing. If the current is less than 0.1amp then it triggers the P0135 and as someone has been playing about with it then it could easily be just a simple blown fuse.
If the pre cat O2 sensor isn't getting up to temp then the emissions go to pot and you get the APF |
Good points and yes check, but you can have 100% correct λ-sensor opperation with proper voltage across the heater (+ve supplied by the relay beneath the ECU) correct current flow etc and still get the heater circuit DTC.
This ofcourse is not meant to be.
How many miles on the clock?
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| 1.4i, 2001, 3-door, China Blue
Repair safely - Drive safely | |
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