VOLVO
SUM-C111E13 - Left Rear Body Acceleration Sensor. General Electrical Failures. Bus off
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?
The fault code is labelled bus off, but it concerns the signal from the left rear acceleration sensor being absent. The cause may be poor contact, a break in the ground, supply or signal wire, or a damaged sensor. Four-C is switched off.
Possible causes
- Poor contact from oxidation or contact resistance in the connectors
- Open circuit in the sensor's ground wire
- Open circuit in the sensor's supply wire
- Open circuit in the sensor's signal wire
- Damaged acceleration sensor
What you can do
- 1Check the connector at the left rear sensor for looseness or oxidation
- 2Use a multimeter to check that the ground, supply and signal wires to the sensor are not broken, with the ignition switched off
- 3Read the fault status after the test drive to see whether the fault remains
- 4If the wires are sound: have a workshop check the sensor and replace it if needed
Symptoms you may notice2
- Message in the text display
- Four-C does not work
What the fault can affect1
- Four-C function is switched off
General guidance for car owners. Diagnosis on the car can point to a different cause.