VOLVO
CCM-DD20 - LIN bus 2. Incorrect data
System
Climate Control Module (CCM)
Volvo models this fault code applies to
This fault code has different meanings depending on model, model year or engine. Select the meaning that applies to your car.
Applies to the following models:
5 modelsC30 (2007–2013), C30 Electric (2011–2013), C70 (2006–2013), S40 (2004–2013), V50 (2004–2013)
What does this fault code mean?
The climate control module (CCM) has found that one component on LIN bus 2 is sending faulty data, which disrupts traffic on the bus. The suspected component may be the right seat heating module. The fault can cause several symptoms in the heating and air functions.
Possible causes
- Faulty data sent over LIN bus 2
What you can do
- 1Check that the fuses are intact
- 2Disconnect the connector to the right seat heating module and see whether the other functions work again
- 3If the other functions then work, replace the right seat heating module, or have a workshop do it
- 4If you have a diagnostic tool, activate the different functions and see which ones do not respond
- 5Clear the code and road test the car to see whether it returns
Symptoms you may notice5
- Mist on the windows and/or the outside mirrors
- Air flow problem
- Poor heating in the cabin
- Front seat heating does not operate
- Poor air quality in the cabin
General guidance for car owners. Diagnosis on the car can point to a different cause.