VOLVO
SUM-0204 - Control module. Internal fault
System
Suspension Module (SUM)
Volvo models this fault code applies to
Applies to the following models:
4 modelsS60 (2001–2009), S80 (1999–2006), V70 (2000–2008), V70 XC / XC70 (2001–2007)
Show models by year and engine (7)
What does this fault code mean?
The suspension control module has detected that its internal circuits are not working. The fault is caused by a defective control module, and the Four-C control is switched off.
Possible causes
- Defective suspension control module
What you can do
- 1Clear the code and test-drive the car to see whether it returns
- 2If the code returns, have a workshop replace the suspension control module
- 3Check that the suspension system fuses are intact; the owner's manual shows where they are
- 4A new control module is supplied without software. Have a workshop program and calibrate it after the replacement
Symptoms you may notice3
- The general warning lamp lights
- Message in the display
- Four-C does not work
What the fault can affect1
- The Four-C control is switched off
General guidance for car owners. Diagnosis on the car can point to a different cause.