Anti Pollution fault - HELP
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adrian2006uk
- Posts: 1
- Joined: Sat Jun 23, 2007 12:57 pm
:(Hi, read some of the previous posts about this fault, however, mine has the anti pollution fault on the display no cat fault displayed and I dont have a splutter. The car drives fine, it is a 2.0l. Peugeot said today that the cat has aged and the oxygen sensors aren't responding. I think they are trying to rip me off as they want £1500+ to fix it. Can anyone help. Thanks Helen
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lastvts
- Posts: 118
- Joined: Thu Jun 26, 2003 5:33 am
For a start an oxygen sensor or lambda probe merely senses emissions and sends a signal to the engine management system that then responds to the input by adjusting the fuel/ air mixture. If the sensor has failed then I would think it could easily be replaced by a backstreet mechanic for little cost. The sensor screws in to the side of the catalytic converter and if you use economic engineering theory then you would change the cheapest part first before changing the catalytic converter. If the sensor has failed completely I would think you would smell a rich fuel mixture from the exhaust and I would also think the fuel emissions would be shot, but I suspect it was a temporary fault and the warning is a log of the fault. If your car is due an MOT it might be worth having it done early to check. I have also read that the first thing to try is running the car to near on empty and then fill up with BP ultimate to clean things out a little.
It could well be the case that the Cat has gone and this should also show up in the emissions test of an MOT, but I do not see how anyone could tell the difference between a dodgy air sensor and dodgy Cat. And as Peugeot have stated that there is a fault with the sensor I can only guess that they want to change the Cat because they are worried about damaging it when removing the probe. Either that or they are trying to rip you off:scratch:. I would think they would at least try and change the sensor first. What mileage and how old is you car?
What you need to find out is if the fault is still there or are you seeing a logged fault code because the fault has simply been logged, but is not current. On pre-multiplex cars the engine warning lamp flashes if the fault is active and just stays on if the fault was sensed, but not currently occurring. I am not sure if it is the same on a multiplex car. If the fault is just logged it can allegedly be cleared by disconnecting the battery for a couple of days.
It could well be the case that the Cat has gone and this should also show up in the emissions test of an MOT, but I do not see how anyone could tell the difference between a dodgy air sensor and dodgy Cat. And as Peugeot have stated that there is a fault with the sensor I can only guess that they want to change the Cat because they are worried about damaging it when removing the probe. Either that or they are trying to rip you off:scratch:. I would think they would at least try and change the sensor first. What mileage and how old is you car?
What you need to find out is if the fault is still there or are you seeing a logged fault code because the fault has simply been logged, but is not current. On pre-multiplex cars the engine warning lamp flashes if the fault is active and just stays on if the fault was sensed, but not currently occurring. I am not sure if it is the same on a multiplex car. If the fault is just logged it can allegedly be cleared by disconnecting the battery for a couple of days.