VOLVO
ECM-P050087 - Vehicle Speed Sensor A. Bus Signal / Message Failures. Missing message
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
10 modelsS60 (2011–), S80 (2007–), V40 (2013–), V40 Cross Country (2013–), V60 (2011–), V60 Cross Country (2015–), V70 (2008–), XC60 (2009–), XC70 (2008–), XC90 (2003–)
Show models by year and engine (36)
- Volvo S60 (2011–)2011–2012Engine B5254T5, B6304T4 only
- Volvo S60 (2011–)2013–2014Engine B5204T8, B5204T9, B5254T12, B5254T14, B6304T4 only
- Volvo S60 (2011–)2015Engine B5204T8, B5204T9, B5254T12, B5254T14, B6304T3, B6304T4, B6304T5 only
- Volvo S80 (2007–)2007All engines except: D5244T4, D5244T5
- Volvo S80 (2007–)2008Engine B5254T6, B6304T2, B6324S, B8444S only
- Volvo S80 (2007–)2009Engine B5254T6, B5254T8, B6304T2, B6324S, B8444S only
- Volvo S80 (2007–)2010Engine B5254T10, B5254T11, B5254T8, B6304T2, B6324S, B6324S2, B8444S only
- Volvo S80 (2007–)2011Engine B5254T10, B5254T11, B5254T8, B6304T4, B6324S4, B6324S5, B8444S only
- Volvo S80 (2007–)2012Engine B5254T10, B6304T4, B6324S4, B6324S5 only
- Volvo S80 (2007–)2013–2014Engine B5254T12, B5254T14, B6304T4, B6324S4, B6324S5 only
- Volvo S80 (2007–)2015Engine B6304T4, B6324S4, B6324S5 only
- Volvo V40 (2013–)2013–2014Engine B5204T8, B5204T9, B5254T12, B5254T14 only
- Volvo V40 (2013–)2015Engine B5204T8, B5204T9 only
- Volvo V40 Cross Country (2013–)2013–2015Engine B5204T8, B5204T9, B5254T12, B5254T14 only
- Volvo V60 (2011–)2011–2012Engine B6304T4 only
- Volvo V60 (2011–)2013Engine B5204T8, B5204T9, B6304T4 only
- Volvo V60 (2011–)2014Engine B5204T8, B5204T9, B5254T12, B6304T4 only
- Volvo V60 (2011–)2015Engine B5204T9, B5254T12, B6304T3, B6304T4, B6304T5 only
- Volvo V60 Cross Country (2015–)2015
- Volvo V70 (2008–)2008Engine B5254T6, B6304T2, B6324S only
- Volvo V70 (2008–)2009Engine B5254T6, B5254T8, B6304T2, B6324S only
- Volvo V70 (2008–)2010Engine B5254T10, B5254T11, B6304T2, B6324S, B6324S2 only
- Volvo V70 (2008–)2011Engine B5254T10, B5254T11, B6304T4, B6324S5 only
- Volvo V70 (2008–)2012Engine B5254T10, B6304T4, B6324S5 only
- Volvo V70 (2008–)2013–2014Engine B5204T9, B6304T4, B6324S5 only
- Volvo V70 (2008–)2015Engine B5204T9, B6304T4 only
- Volvo XC60 (2009–)2009Engine B6304T2 only
- Volvo XC60 (2009–)2010Engine B6304T2, B6324S, B6324S2 only
- Volvo XC60 (2009–)2011–2014Engine B6304T4, B6324S4, B6324S5 only
- Volvo XC60 (2009–)2015Engine B5204T9, B5254T12, B5254T14, B6304T4, B6324S4, B6324S5 only
- Volvo XC70 (2008–)2008Engine B6324S only
- Volvo XC70 (2008–)2009Engine B6304T2, B6324S only
- Volvo XC70 (2008–)2010Engine B6304T2, B6324S, B6324S2 only
- Volvo XC70 (2008–)2011–2015Engine B6304T4, B6324S4, B6324S5 only
- Volvo XC90 (2003–)2007–2010Engine B6324S only
- Volvo XC90 (2003–)2011–2014Engine B6324S5 only
What does this fault code mean?
The code indicates that communication between the brake control module (BCM) and the engine control module (ECM) has stopped. The fault may lie in the CAN wires, the connectors or one of the control modules, or in another control module on the same part of the CAN network.
Possible causes
- Contact resistance or a break in the CAN connections or on one of the CAN wires
- Short circuit between the CAN wires, or one or both signal wires short-circuited to ground, supply voltage or each other
- Damaged or internally faulty brake control module (BCM)
- Damaged or internally faulty engine control module (ECM)
- Internal fault in another control module on the same part of the CAN network
What you can do
- 1If you have a diagnostic tool, read the fault codes in the brake control module and the engine control module, and remedy them first
- 2Check that the CAN connectors are secure and free from oxidation
- 3Look for chafing or pinch damage on the CAN wires and use a multimeter to check that they have no break
- 4The brake system is safety-critical: have a workshop check the brake control module. Do not work on the brake system yourself
- 5Clear the fault code once the fault has been remedied, and road test
Symptoms you may notice3
- The malfunction indicator lamp (MIL) lights up
- The cruise control does not work at all
- A message appears on the text display
What the fault can affect2
- the brake module speed signal is replaced by a fixed value
- The cruise control is switched off while the fault is active
General guidance for car owners. Diagnosis on the car can point to a different cause.