VOLVO
SUM-0202 - Control module. Signal too high
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 battery voltage measured by the suspension control module is too high. The cause may be a fault in the charging system or a defective control module. The Four-C function is blocked.
Possible causes
- Fault in the charging system
- Defective suspension control module
What you can do
- 1Use a multimeter to check that the battery voltage is normal with the engine idling
- 2If the voltage is too high, have a workshop check the charging system
- 3Clear the code and test-drive the car to see whether it returns
- 4If the voltage is normal but the fault remains, have a workshop check the control module
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 function is blocked
General guidance for car owners. Diagnosis on the car can point to a different cause.