VOLVO
SUM-0145 - Solenoid, suspension right rear. Current too low
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 current from the solenoid at the right rear wheel is too low. The fault may be caused by poor contact in the connections, a break in the supply or signal wire, or a defective solenoid. The Four-C function is blocked.
Possible causes
- Contact resistance in the connections
- Open circuit in the power supply wire to the solenoid
- A break, or a ground fault, in the signal cable from the solenoid
- Defective solenoid
What you can do
- 1Check the connectors at the solenoid at the right rear and at the control module for contact resistance or oxidation
- 2Check that the solenoid on the right rear strut is correctly fitted
- 3Use a multimeter to check that the supply and signal wires to the solenoid are not broken or in contact with ground (the car body)
- 4Check that the suspension system fuses are intact; the owner's manual shows where they are
- 5Have a workshop measure the solenoid's resistance and replace it if it is damaged
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.