VOLVO
ECM-9850 - Engine control module (ECM). Internal fault
System
Engine Control Module (ECM)
Volvo models this fault code applies to
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 (10)
- Volvo S60 (2001–2009)2005–2006Engine B5204T5, B5244T4, B5244T5, B5254T2, B5254T4 only
- Volvo S80 (1999–2006)2005–2006Engine B5204T5, B5244T4, B5254T2, B6294S2, B6294T only
- Volvo V70 (2000–2008)2005Engine B5204T5, B5244T4, B5244T5, B5254T2, B5254T4 only
- Volvo V70 (2000–2008)2006Engine B5204T5, B5244T5, B5254T2, B5254T4 only
- Volvo V70 XC / XC70 (2001–2007)2005All engines except: D5244T
- Volvo V70 XC / XC70 (2001–2007)2006Engine B5244T4, B5254T2 only
- Volvo XC90 (2003–)2005–2006Engine B5254T2, B6294T only
- Volvo XC90 (2003–)2007–2012Engine B5254T2 only
- Volvo XC90 (2003–)2013–2014Engine B5254T9 only
- Volvo XC90 (2003–)2015
What does this fault code mean?
The ECM has registered an internal fault in one of its monitoring functions. The code is normally set together with another code concerning those monitoring functions.
Possible causes
- A second code for the internal monitoring is stored in the module
- Damaged engine control module (ECM)
What you can do
- 1Fix first the other fault codes that concern the engine control module's internal monitoring
- 2Clear the code and test drive the car to see whether it returns
- 3For a permanent fault the engine control module is replaced, which a workshop does
Symptoms you may notice2
- Low power output and lack of power while driving
- Uneven idle
General guidance for car owners. Diagnosis on the car can point to a different cause.