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Multiple control module issues

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Old Aug 6th, 2022, 16:22   #1
davehope240180
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Last Online: Sep 9th, 2022 23:14
Join Date: Jul 2022
Location: Sunderland
Default Multiple control module issues

Good afternoon

Iam having a major headache with my XC90 2007 D5224T4, It all started about about 6 months ago with the engine system service required message, in and out of limp mode and dpf constantly blocking, purchased vida to find out what was going and low and behold i had several dtc's listed rectified all those issues but the maf, tcm and dem ones are really bugging me now, I did have two failed seals on the turbo box those have been replace but still had the maf issues luckily i did have a brand new maf fitted that and I am still getting this error message
ECM-135F signal to low

I use vida to clear these but then they come back, I know its a brand new Maf and vida says it could be a incorrect cam position, could the sensor just be covered in gunk and need cleaning as i had a bucket load of carbon build up on the intake pipes.

The other codes i am getting are
DEM-0007 Hydraulic pressure faulty value (think the sensor is goosed on this)
TCM-0A31 control module communication signal missing from ECM

Any help would be great
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Old Dec 4th, 2023, 16:31   #2
vickyg
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Last Online: Feb 23rd, 2024 13:58
Join Date: Aug 2007
Location: Penzance
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Quote:
Originally Posted by davehope240180 View Post
Good afternoon

Iam having a major headache with my XC90 2007 D5224T4, It all started about about 6 months ago with the engine system service required message, in and out of limp mode and dpf constantly blocking, purchased vida to find out what was going and low and behold i had several dtc's listed rectified all those issues but the maf, tcm and dem ones are really bugging me now, I did have two failed seals on the turbo box those have been replace but still had the maf issues luckily i did have a brand new maf fitted that and I am still getting this error message
ECM-135F signal to low

I use vida to clear these but then they come back, I know its a brand new Maf and vida says it could be a incorrect cam position, could the sensor just be covered in gunk and need cleaning as i had a bucket load of carbon build up on the intake pipes.

The other codes i am getting are
DEM-0007 Hydraulic pressure faulty value (think the sensor is goosed on this)
TCM-0A31 control module communication signal missing from ECM

Any help would be great
Did you resolve your ECM-135F signal to low as I'm battling the same thing and getting no where fast
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