I will add my recent one here in case its helpful to someone in the future.
I was towing 3.5T van Sydney to Coffs Harbour. Had restricted performance twice on the freeway between Sydney and Newcastle. Cleared the P006A code and continued. The next day continued to Coffs Harbour and had 5 more occurrences. The wife was clearing them as we went along in the end. I looked for the dreaded cracked manifold when it happened but they appeared OK. Unhooked the van and could not get it the fault, so only towing.
I put it in with Coffs Landrover and they diagnosed a crack around the first hose coming from the primary turbo.(see red arrow.) New hose ($516) plus fitting and no re-occurrence after.
Attachment 151825
The hose with the end of a teaspoon showing the crack.
Now back from the trip, I have telltale oil that indicates a cracked left hand manifold is in progress, but that is the next story.
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