VOLVO
BCM-0101 - Communication between control modules. Communication problems with the engine control module (ECM)
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 engine control module (ECM) sends a signal over CAN that indicates whether its engine speed signal is correct. The brake control module uses the speed signal when regulating the stability function. The code is set when the engine control module reports that the speed signal is implausible. The fault is engine-related and can be read after the engine has started.
Possible causes
- Fault in the engine management system
What you can do
- 1Read the codes in the engine control module and fault-find according to them first
- 2Check the engine management system with diagnostic equipment
- 3The brake system is safety critical: do not replace the brake control module for this code, and do not work on the stability system yourself
Symptoms you may notice5
- Anti-spin warning lamp on
- General yellow warning lamp on
- Anti-spin does not work
- Stability function does not work
- Anti-skid does not work
What the fault can affect1
- Traction control (TC), stability control (SC) and active yaw control (AYC) are disabled
General guidance for car owners. Diagnosis on the car can point to a different cause.