Thanks I saw the group of threads that pop up after you post so I'm beginning to think it's the MAS (Mass AirFlow Sensor) which should be covered under my StartMark. I was more wondering what the Trim Malfunction Bank 1 was.

NP

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1998 C280 Sport - Member 744 Crew
1988 Toyota MR2-Kompressor(No. 3) 168K+ Miles
Prior MB Cars 1974 450SLC & 1985 190E 2.3

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