VOLVO
ECM-919A - Engine control module (ECM). Faulty signal
System
Engine Control Module (ECM)
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:
6 modelsC70 Cabriolet (1998–2005), S60 (2001–2009), S80 (1999–2006), V70 (2000–2008), V70 XC / XC70 (2001–2007), XC90 (2003–)
Show models by year and engine (13)
- Volvo C70 Cabriolet (1998–2005)2003–2005
- Volvo S60 (2001–2009)2002Engine B5204T5, B5234T3, B5234T7, B5244T3 only
- Volvo S60 (2001–2009)2003Engine B5204T5, B5234T3, B5234T7, B5244T3, B5254T2 only
- Volvo S60 (2001–2009)2004Engine B5204T5, B5234T3, B5234T7, B5254T2, B5254T4 only
- Volvo S80 (1999–2006)2002Engine B5204T5, B5234T7, B5244T3, B6294S2, B6294T only
- Volvo S80 (1999–2006)2003Engine B5204T5, B5234T7, B5244T3, B5254T2, B6294S2, B6294T only
- Volvo S80 (1999–2006)2004Engine B5204T5, B5234T7, B5254T2, B6294S2, B6294T only
- Volvo V70 (2000–2008)2002Engine B5204T5, B5234T3, B5234T7, B5244T3 only
- Volvo V70 (2000–2008)2003Engine B5204T5, B5234T3, B5234T7, B5244T3, B5254T2 only
- Volvo V70 (2000–2008)2004Engine B5204T5, B5234T3, B5234T7, B5254T2, B5254T4 only
- Volvo V70 XC / XC70 (2001–2007)2002
- Volvo V70 XC / XC70 (2001–2007)2003–2004All engines except: D5244T
- Volvo XC90 (2003–)2003–2004All engines except: D5244T
What does this fault code mean?
The engine control module (ECM) has registered a faulty signal in the control of the throttle. The cause can be a sticking throttle, poor contacts or damaged wiring to the damper motor, a defective throttle unit, or faulty software in the ECM.
Possible causes
- The throttle sticks or is blocked by oil film or dust
- Contact resistance or oxidation in the connectors between the ECM and the throttle unit
- Open circuit or short-circuit to ground or voltage in the wiring to the damper motor
- The wiring to the damper motor is short-circuited to itself
- Defective throttle unit
- Faulty software in the engine control module
What you can do
- 1If you have a diagnostic tool, read the fault status of the code with the engine running and see whether the fault is active
- 2Check the connectors at the throttle unit and the engine control module for contact resistance and oxidation
- 3Use a multimeter to check that the damper motor wiring has no open circuit and is not short-circuited to ground, voltage or each other
- 4Check that the throttle is not blocked by any object and is not sticking, and clean it if necessary
- 5Have a workshop check whether the engine control module software needs reloading, and carry out an adaptation of the throttle unit afterwards
Symptoms you may notice2
- The Check engine lamp lights
- The car's performance is reduced
What the fault can affect1
- The ECM switches off the supply to the throttle motor, and the throttle moves to its spring-returned position
General guidance for car owners. Diagnosis on the car can point to a different cause.