Error code 1211 on series 3 2.0 16V VIS

[Chris]

Can anyone help please? I think this might be a 'voltage out of range' code, could anyone confirm this please?

Many thanks.

[Chris]

..er, sorry - mis-read it, it's code 2 1 1 1 ...which if it's the same code list as the 164 M1.7 ECU is 'Knock Sensor 1 fault' which would explain why the car feels flat when the trouble light is on.

Right.....where is the knock sensor hidden then?

[paddyjudge@eircom.net]

Under the center of the intake manifold - screws on to engine block. A mirror to see and probably through left vallance to remove.
P

[Chris]

Thanks Paddy, found it...

Now I need to find out what's wrong with it! I've managed to get some data so know what the waveform should look like. I'll get a 'scope on it tomorrow and see what I find. I'll also check it's fitted properly as I understand they are very sensitive to the torque of the fixing bolt.


Cheers


Chris

[Chris]

...well....I cleaned the connector to the knock sensor and reset the ECU which didn't seem to help initially. Then I put a 'scope on it, which didn't tell me much at all...then the fault cleared and hasn't returned.