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Volvo four cylinder fuel trim data

Help, Advice, Owners' Discussion and DIY Tutorials on S40 and V40. In this forum you'll find S40/V40-specific owners asking and answering questions on maintenance, ownership, repairs, tutorials and almost every do-it-yourself thing you can do to save money owning these Volvos.

1996 - 2004 S40
1996 - 2004 V40

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Volvo four cylinder fuel trim data

Post by emtor » Tue May 02, 2017 5:54 am

Engine B4148S2, 1.8 litre non turbo non GDI.
Been doing some cleaning and forgot to insert the IACV harness which caused the ECU to throw a P0505.
I looked at the freeze frame data and my code scanner reports data for bank1 and bank3.
Since this is a 4 cyl. engine I thought it only had bank1.
Can someone explain why I see data for banks 1 and 3?

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Re: Volvo four cylinder fuel trim data

Post by 800artfreed » Wed Oct 02, 2019 9:20 pm

Some engines actually split the 4 cylinders into two sets. I would have thought bank 1 & 2 but I guess it could be 1 & 3. I would also think that this system would have more engine control sensors to measure performance of the different "banks"

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