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Ecm-0038 flow too high

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Old Dec 10th, 2019, 09:09   #1
rasemailcz
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Default Ecm-0038 flow too high

Hi,

I'm having some problems with my V70 2.5TDi 2000 D5252T.

At first, I tried the Volvo service. Everything with "EGR" in name was replaced.

Then, I bought the DiCE and found out that the problem is ECM-0038 Flow too high. I searched the forums and I suspect the turbo control valve. However, the car is in the service now again and the guys claim that the turbo is OK.

EDIT: The MAF was replaced too.

Does anyone have any suggestions? Did anyone experience the same thing?

Thanks...
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Old Dec 10th, 2019, 13:05   #2
Brendan W
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This thread might be of some help.
https://www.volvoforums.org.uk/showt...CM-0038&page=2
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Old Dec 19th, 2019, 10:46   #3
rasemailcz
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Unfortunately, there seems to be no relevant info... But thanks anyway.
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Old Dec 21st, 2019, 02:09   #4
The Landshark
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worth checking the maf live data, i've seen new ones(aftermarket) giving bad readings from new, the only other thing i can think of is a leak in the intake system somewhere, intercooler would be a prime suspect.
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Old Dec 22nd, 2019, 22:29   #5
rasemailcz
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So, I had some time to play with the car today and:

1) The error that is raised by the MAF sensor is "ECM-0039 Boost pressure control - flow to high"

2) I made some screenshots of the new BOSCH MAF in VIDA, the blue curve is the desired value, the green curve is the actual value





3) For some reason, I don't remember why - probably someone told me, I checked the "dynamic pump setting" and the values are 3-4 degrees off. Could that be the reason for the ECM-0039 fault?

4) I checked the hoses, everything seems to be tight, no leakage found...

Last edited by rasemailcz; Dec 22nd, 2019 at 22:33.
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