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International Automotive Technicians Network
Re: 2008 GM 6.6 P0101
Posted to Technical Discussion Forum on 10/4/2024 1 Reply

If the EGR is flowing when it shouldn't (stuck open), the MAF reading will be lower.

This will also cause performance complaints as the MAF is used for fuel quantity calculations.

If it's a DPF equipped engine , it gets worse yet. Login to read more.

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