VOLVO
BCM-0097 - Communication between control modules. Communication problems with the central electronic module (CEM)
System
Brake Control Module (BCM)
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 modelsS60 (2001–2009), S80 (1999–2006), V70 (2000–2008), V70 XC / XC70 (2001–2007), XC90 (2003–)
Show models by year and engine (11)
- Volvo S60 (2001–2009)2002–2009
- Volvo S80 (1999–2006)2002–2006
- Volvo V70 (2000–2008)2002–2008
- Volvo V70 XC / XC70 (2001–2007)2002–2007
- Volvo XC90 (2003–)2003–2004, 2015
- Volvo XC90 (2003–)2005–2006All engines except: B8444S
- Volvo XC90 (2003–)2007Engine B5254T2, D5244T4 only
- Volvo XC90 (2003–)2008–2010All engines except: B6324S, B8444S
- Volvo XC90 (2003–)2011All engines except: B6324S5, B8444S
- Volvo XC90 (2003–)2012All engines except: B6324S5
- Volvo XC90 (2003–)2013–2014Engine B5254T9 only
What does this fault code mean?
The brake control module (BCM) is waiting for information from the central electronic module (CEM) about the car's vehicle type. The code is set if the signal from the CEM is missing for longer than allowed after the ignition is switched on, or if the modules in the car do not match.
Possible causes
- Brake control module from another car model has been fitted
- Central electronic module from another car model has been fitted
What you can do
- 1Check whether communication codes are stored in the central electronic module and fault-find those first
- 2Check that the correct brake control module and central electronic module are fitted and belong to the same car model
- 3Read the communication with diagnostic equipment and correct the cause
- 4The brake system is safety critical: have a workshop repair the fault, and do not work on the brake control module yourself
Symptoms you may notice4
- Anti-spin does not work
- Stability function does not work
- Anti-skid does not work
- General yellow warning lamp on
What the fault can affect3
- Traction control (TC) is disabled
- Stability control (SC) is disabled
- Active yaw control (AYC) is disabled
General guidance for car owners. Diagnosis on the car can point to a different cause.