Very interesting stuff ninja!!!

Interesting how it says that's something blocking DPF regen -> add to the list of things the ECU checks before moving it from requested to active.

But back to the topic: you mention wiring and DDE fan but could this excessive temperature again be the result of dirt in the throttle circuitry similar to this



That results in a excessive current being absorbed the the throttle to maintain a certain position?

While bad wiring is possible (often rodents or clumsy mechanics), the DDE fan is monitored directly by the DDE so it would be odd that is not directly detected.

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