Wondering how you went with fixing this loss of power problem with increasing altitude.Sounds like my vehicle has very similar problem. Has happened three times, exactly the same symptoms. Climbing at altitude, significant loss of power, CEL comes on. Engine develops no power at all below 2800 rpm.... and then it seems to develop moderate power. Throws a P0106 fault code. Dealer cleaned the mass airflow sensor. Same fault three days later climbing at altitude again. Freeze frame of stored fault pointed to MAP sensor out of range.... it was showing 100 kpa.....which sounds plausible as the engine was not producing any boost.... it should have been double this amount.NowForThe5th wrote:Depends on how dirty it is. A little buildup may be just enough to misread the air density, which is why I suggested it as an elimination step, rather than the root cause.
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