VOLVO
SUM-C112C12 - Mode Indicator 1. General Electrical Failures. Circuit short to battery
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?
Mode indicator 1 in the Four-C switch receives too high a voltage from the suspension control module (SUM). The cause may be the indicator supply wire being short-circuited to supply voltage, a break in the ground wire to the switch, or a damaged switch. The driving-mode indication then behaves wrongly.
Possible causes
- Power supply wire to the mode indicator is short-circuited to supply voltage
- Open circuit in the ground wire to the Four-C switch
- The Four-C function switch is damaged
What you can do
- 1Try the Four-C switch and check that the driving-mode indication behaves normally when you select the different programs
- 2Use a multimeter to check that the wire to the mode indicator has no contact with the battery positive, with the ignition switched off
- 3Check that the ground wire to the switch is intact and that the connector is firmly seated
- 4If the fault remains: have a workshop check the switch
Symptoms you may notice2
- The driving-mode indication in the Four-C switch behaves wrongly
- The lamp for the driving mode stays on all the time
General guidance for car owners. Diagnosis on the car can point to a different cause.