VOLVO
SUM-0143 - Solenoid, suspension right rear. Signal missing
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)
What does this fault code mean?
The control module registers that the voltage to the solenoid at the right rear wheel is missing. The cause may be looseness or poor contact, a break in the supply or signal wire, or a damaged solenoid. The Four-C function is blocked.
Possible causes
- Poor contact or loose connection in the connections
- Open circuit in the power supply to the solenoid
- Open circuit in the signal cable
- Damaged solenoid
What you can do
- 1Check the connectors at the solenoid on the right rear strut for looseness or oxidation
- 2Use a multimeter to check that the supply and signal wires to the solenoid at the right rear wheel are not broken
- 3Have a workshop measure the solenoid's resistance
- 4If you have a diagnostic tool, activate the solenoid at the right rear wheel and see whether it responds
- 5Check that the suspension system fuses are intact; the owner's manual shows where they are
- 6If the wiring is intact but the solenoid does not respond, have a workshop replace it
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.