VOLVO
SUM-U201667 - Control Module Main Software. Algorithm Based Failures. Signal invalid
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?
An algorithm fault in the main program of the SUM has caused the control module to receive an invalid signal. The fault is a software fault in the control module.
Possible causes
- Software fault
What you can do
- 1Read the code, clear it and road test the car to see whether it comes back
- 2Read and note the other fault codes in the SUM
- 3Have a workshop program the SUM with 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.