V60 D4 VEA Reduced Engine Performace

[V70Gavin]

Originally Posted by coxstev29

Hi All

I have been getting a intermittent fault with my 2014 (MY 2015) V60 D4 VEA 74k.

The fault is "Reduced Engine Performance", performance seems normal and it would reset after the engine had been stopped for a few hours. Over the last week I have also now been getting the engine management light come on. I have code read with a ODBII reader and the only error code is P00BC (MAF low air flow). when i look at the data it shows the MAF is working normally (39g 2000rpm, 63g 3500rpm). However when the fault happens the EGR is reading EGR Duty 0%, EGR error 99%. When the error is not present is reads normal (EGR duty 38%, EGR error 0%).

Do you think its an EGR valve issue? or will the MAF cause the EGR to close? I have just purchased a used MAF and waiting for delivery.

Car has full Volvo service history and was only severed December 2018

These readings look very similar to the problem I am now suffering. How did it get resolved?

Thanks, Gavin

[ruperto]

Hi

I am in the same boat please let us know what you found out and how have you resolved the issue. On a side note the mercedes diesels of the newer generation when you replace the MAF you need to do adaptations on the ecu to let it know you have a new one installed and it will adapt to it otherwise it does the same thing you get maf error codes even when you replaced with a brand new part. The dealer here i sent this to for some help is turning out to be clueless on this problem

[jneish]

Take a look at my problems, now resolved
https://www.volvoforums.org.uk/showp...&postcount=465