VOLVO
SUM-U201446 - Control Module Hardware. System Internal Failures. Calibration / parameter memory failure
System
Suspension Module (SUM)
Volvo models this fault code applies to
Applies to the following models:
7 modelsS60 (2011–), S80 (2007–), V60 (2011–), V60 Cross Country (2015–), V70 (2008–), XC60 (2009–), XC70 (2008–)
What does this fault code mean?
The control module stores calibration data in its own memory and monitors how that memory is read. The fault code is set when the memory contains incorrect information, which switches off the Four-C function.
Possible causes
- Internal fault in the suspension control module (SUM)
What you can do
- 1Read and note the code, clear it and road test to see whether it returns
- 2Check that the connector at the SUM is clean and firmly fitted
- 3If the fault returns, have a workshop replace the control module, download new software and calibrate it
Symptoms you may notice2
- A message appears in the information display
- The Four-C function does not work
What the fault can affect1
- The Four-C function is switched off
General guidance for car owners. Diagnosis on the car can point to a different cause.