VOLVO
ECM-913C - Throttle unit. 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?
When the engine control module (ECM) tries to adapt the throttle unit and the basic conditions for the adaptation are not met, the code is set and the adaptation is cancelled. Other stored fault codes can prevent the adaptation, so they should be remedied first.
Possible causes
- The throttle sticks or is blocked, for example by an oil film or dust
- Contact resistance or oxidation in the connectors between the ECM and the throttle unit
- Defective throttle unit
What you can do
- 1Read off the fault codes and first remedy the other stored fault codes, as they can prevent the adaptation
- 2The car must be stationary, the accelerator released and the ignition on with the engine off when the adaptation is run.
- 3Check the connectors at the throttle unit and at the engine control module for contact resistance and oxidation
- 4Check that the throttle is not blocked by any object or sticking, and clean it if necessary
- 5If you have a diagnostic tool: watch the adaptation parameter for the throttle unit. It should go from YES to NO when adaptation is done, and then show OK.
- 6If the adaptation does not complete, have a workshop with diagnostic equipment carry it out, as it is a calibration
Symptoms you may notice1
- The engine feels weaker than normal
What the fault can affect2
- The adaptation of the throttle unit is cancelled
- The ECM cuts the supply to the throttle motor, so the throttle moves to its spring-returned position
General guidance for car owners. Diagnosis on the car can point to a different cause.