It seems to come on randomley, werther im driving it hard or normal.

there seems to be no engine problems that i am aware of.

The only thing i hav had a problem with is, bing knocked off boost some times, which i pit down to low fuel in the petrol tank, when i fill it back up, it boosts fine.

What could be causing this light to be coming on thn?

 

probably being knocked off boost due to blocked solenoid....and dont run these cars low/lean on juice...thats just asking for bother ! whats the fault code ???

 

No idea what the fault code is.
How do i find it?

I am now keeping the tank above half, when it gets past 3/4 i go fill back up again.

 

Fault code with the black connectors together on a cold engine was...
2 long and 3 short
And the fault code with the green connectors together with a warm engine..
5 long and 1 short

 

23 is MAF
51 is Neutral position switch

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i had this on my MY99 was MAF failing.

 

Im guessing if it is failing it cannot be repaired, so only a new sencer will do the job.

Would there be a reason it has gone? something broken?

Is the MAF causing it ti read this problem too... 51 is Neutral position switch
??