VOLVO
ECM-A400 - 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)2001Engine D5244T only
- Volvo S60 (2001–2009)2002–2003, 2006Engine D5244T, D5244T2 only
- Volvo S60 (2001–2009)2004–2005Engine D5244T, D5244T2, D5244T3 only
- Volvo S80 (1999–2006)2001Engine D5244T only
- Volvo S80 (1999–2006)2002–2006Engine D5244T, D5244T2 only
- Volvo V70 (2000–2008)2001Engine D5244T only
- Volvo V70 (2000–2008)2002–2003, 2006Engine D5244T, D5244T2 only
- Volvo V70 (2000–2008)2004–2005Engine D5244T, D5244T2, D5244T3 only
- Volvo V70 XC / XC70 (2001–2007)2003–2006Engine D5244T only
- Volvo XC90 (2003–)2003–2006Engine D5244T only
What does this fault code mean?
The code is set when the engine control module detects an internal fault in itself. While the fault is present, communication on the CAN network stops, and a defective engine control module is the cause.
Possible causes
- A defective engine control module
What you can do
- 1Read the code, clear it and road test the car to see whether it returns
- 2Check that the battery is in good condition and that the engine control module connectors are fully seated and free from oxidation
- 3If the fault returns, the module is defective and must be replaced; a new module has no software and must be programmed, which a workshop does
Symptoms you may notice3
- Cruise control does not work at all
- Uneven idle
- Poor accelerator pedal response
What the fault can affect1
- Communication on the CAN network is lost
General guidance for car owners. Diagnosis on the car can point to a different cause.