Starting/immobiliser problems

[terryc101]

Had an intermittent fault over the last few weeks when starting the car. Turn key to position 2 and the immobiliser light would flash constantly and I'd get no pump prime. It did this on the odd occasion but after a few try's it would start as normal.

Now it's been almost 48hours and I can't get the immobiliser to turn off.

Changed the battery in the key and took the barrel surround off and cleaned connections. No luck.

What's the next step? New key? Any wiring I should be looking at?

Any help appreciated guys

 

[terryc101]

today I removed the UCH and had a look at it, couldn't spot any burnt out areas or dodgy connections. I also swapped the decoder ring around the barrel for a spare and checked all fuses, still no luck.

Anyone solved this problem before?