Disco 4 (LR4) Restricted performance on Discovery 4 3.0 TDV6 SE

Hi All. I need some help with the dreaded "Restricted Performance" The DTC Code I had was P006A. I have cleaned both MAFs and MAP which were dirty but did not solve the problem. I have done a reset by short circuiting the negative and Positive together battery disconnected of course, but still goes into Restricted Performance within a couple of minutes of driving. Looked for leaking hose manifolds but cannot see anything amiss. Any ideas?

Hose deteriorating , clamp not tight, hairline crack in one of the plastic unions, a minute air leak somewhere, blocked air filter

Thanks Freelance for the reply. Can you give me any tips as to how to find the leak? Are there any tricks/procedures you can use to find the leak?

Hi Freelance, Found the problem a cracked inlet manifold. Awaiting new one. Thanks for putting me on its tail.

Mike Hawthorn said:

Hi Freelance, Found the problem a cracked inlet manifold. Awaiting new one. Thanks for putting me on its tail.

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can you let me know did you do the manifold with the engine in or out

Engine in I would say

Take the engine cover off
Check both intake manifold
They split