Peugeot Forums banner

Another anti-pollution fault...

10K views 9 replies 6 participants last post by  VapourTrail 
I'm struggling to work out how a head gasket change would result in the lambda sensor flagging up. Maybe it's me, and someone can enlighten me?
The lambda sensor has probably shown up in the faults as it was unplugged without properly disconnecting the battery/putting the BSI/ECU to sleep.

But it is not difficult to damage them when removing/replacing heads/exhaust manifolds/exhaust system. They are not the most robust of components when banged around.

They also do not often react well to excessive water/oil going down the exhaust [e.g. blown head gasket] or to excessively out of spec exhaust fumes [very rich/lean].
 
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top