XF and XFR ( X250 ) 2007 - 2015

Fault Code Troubleshooting: C0034, U0300, U0155

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Old Oct 5, 2023 | 09:57 PM
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VicVegas84's Avatar
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Default Fault Code Troubleshooting: C0034, U0300, U0155

Having some trouble troubleshooting codes.

Replaced front right wheel bearing yet still getting codes for front right wheel speed sensor fault. Has anyone else experienced this?

C0034 is FR wheel speed sensor

U0155 is apparently lost communication with instrument panel cluster

U0133 is apparently lost communication with active roll control module

These didn't clear out with Torque or disconnecting battery. Not sure if they're related.
 
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Old Oct 6, 2023 | 08:02 AM
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Those codes may stay stored forever unless you use a tool which can clear them.
 
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Old Oct 6, 2023 | 12:57 PM
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Those network errors (U codes) are historic faults which means they are not current codes. So ignore those for now. They are common and can come from a number of sources. Usually power fluctuations from starting the car and things like that.

Since you have replaced the sensor I would look next at the reluctor ring as they can get rusted up or damaged and change size which can also cause these type of errors.
I have attached a TSB that is for Land Rover but note that code your getting has 2 other digits that can change the meaning of the code. Aftermarket scanners will generally only pick up the base code of C0034. So there might be a deeper code too.
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