code: CCM B15B693
Posted: 31 Mar 2026, 02:19
hello,
volvo xc90 t8 2017
Fault code: CCM B15B693 (Combustion Preheater Module – no operation)
Fix: I replaced the combustion chamber (burner) inside the heater (CPM).
After that, the heater works нормально and the error is gone.
So the problem was inside the heater, not wiring.
Hope this helps.
volvo xc90 t8 2017
Fault code: CCM B15B693 (Combustion Preheater Module – no operation)
Fix: I replaced the combustion chamber (burner) inside the heater (CPM).
After that, the heater works нормально and the error is gone.
So the problem was inside the heater, not wiring.
Hope this helps.