02 307 2L HDI 110 Dturbo anti pollution fault

[mark21td]

Hi All not been on for a while but I need some help.
I'm getting an "Anti pollution fault" plus "ASR/ESP not working" coming up, this will go out at times and stay off for maybe a day but will come back.
It's going into limp home mode giving reduced power.

Ive tried swapping the vacume valves (the two at frunt of the sump in the middle) this worked for a few hours but was probably a coincedence.

Not had it long and ran fine until I give it a real good boot full reving the engine quite high.

Can anyone help.

[Lighty]

The ESP/ASR fault will come on purely because of the engine fault, it could be loads of things, but check the connection at the very back of the engine under the wiper scuttle.
The intake pipe to the engine joins here, and they can come apart, causing a misreading of air through the maf.

[mark21td]

Ah, funny you should say that, that bit of ducting was apart but the truble has started after I put it back togeather.
I'll chech the connections in that area to see if I desturbed anything.