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Impreza G4+ An volt 5 below error low value

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Help! Ive just drivem to the alps and have fault code 23: An volt 5 below error low value.


The car idles rough & rich , cruises normal with AFR normal & doesnt like full boost

Link G4+ plug and play


Can anyone please help me, before i send the car back to the uk



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It would have helped to know which model impreza we are talking about.


Im assuming it's a V10 as that is the only one with an ANV5 connected to anything important.  On the V10, ANV5 is the RH tumble generator valve position and could definitely affect the way it runs.  If its running rich it suggests the valve is stuck closed.

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