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[venom]

The wife came home to the management light came on, so have done the clip test and 4 codes came up.

1st 12 which I can't find

2nd 16 knock signal circuit 1

3rd 19 incorrect rpm signal

4th 135 telltale checklight voltage low

Does anyone think they are all separate faults or all connected 

[Jimbob]

12 is start of codes - so ignore.
135 just relates to the EML - its working so ignore.

16 - Knock sensor - check the wiring to this, often get chaffed in the aux belt - if so chop out and fix the wire.  Prob this thats put the EML on.

19 crank sensor - doesnt put the eml on, but does cause breakdowns, replace with a new genuine crank sensor asap.

[Marks DTM Calib]

19 is a sign of impending crank sensor failure (poor signal).

16 is the drives side knock sensor.

For former, consider a new crank sensor in the not to distant future.

For the latter, has there been any work carried out recently, cam belt or alternator change etc?

[venom]

Cheers lads, I'll have to pull out the crank sensor to see if it's a metal or plastic one.
I changed the cam cover gaskets a few weeks ago so will have a look at it 

[TheBoy]

Cheers lads, I'll have to pull out the crank sensor to see if it's a metal or plastic one.
I changed the cam cover gaskets a few weeks ago so will have a look at it 

Easy (apparently!) to trap the wire when doing cam cover gaskets - seen that a few times now

[venom]

12 is start of codes - so ignore.
135 just relates to the EML - its working so ignore.

16 - Knock sensor - check the wiring to this, often get chaffed in the aux belt - if so chop out and fix the wire.  Prob this thats put the EML on.

19 crank sensor - doesnt put the eml on, but does cause breakdowns, replace with a new genuine crank sensor asap.

Waiting for a new crank sensor, but have checked the wire on the knock sensor & all seems OK & no pinking so could it be showing up as the crank sensors playing up  :question

[Jimbob]

I'd have said unlikely, but is possible I guess.

Wait and see 

[dbug]

Fix the crank sensor first mate as this can throw up all sorts of odd codes as well as the 19 

[venom]

  Fitted a new crank sensor & the only codes coming up now is 12 & 135, so the knock sensor is fine