VOLVO
ECM-2101 - Throttle motor. Faulty signal
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
3 modelsC30 (2007–2013), S40 (2004–2013), V50 (2004–2013)
Show models by year and engine (13)
- Volvo C30 (2007–2013)2007–2009Engine B4184S11, B4184S8, B4204S3 only
- Volvo C30 (2007–2013)2010Engine B4184S11, B4184S8, B4204S3, B4204S4 only
- Volvo C30 (2007–2013)2011–2013Engine B4204S3, B4204S4 only
- Volvo S40 (2004–2013)2005Engine B4184S11 only
- Volvo S40 (2004–2013)2006Engine B4184S11, B4184S8 only
- Volvo S40 (2004–2013)2007–2009Engine B4184S11, B4184S8, B4204S3 only
- Volvo S40 (2004–2013)2010Engine B4184S11, B4184S8, B4204S3, B4204S4 only
- Volvo S40 (2004–2013)2011–2012Engine B4204S3, B4204S4 only
- Volvo V50 (2004–2013)2005Engine B4184S11 only
- Volvo V50 (2004–2013)2006Engine B4184S11, B4184S8 only
- Volvo V50 (2004–2013)2007–2009Engine B4184S11, B4184S8, B4204S3 only
- Volvo V50 (2004–2013)2010Engine B4184S11, B4184S8, B4204S3, B4204S4 only
- Volvo V50 (2004–2013)2011–2012Engine B4204S3, B4204S4 only
What does this fault code mean?
The engine control module (ECM) has registered that the wiring to the throttle motor is incorrectly connected or damaged. The fault can come from a damaged or incorrectly connected connector. It is typically noticed as a poor response from the accelerator pedal.
Possible causes
- Damaged connector
- Connector incorrectly connected at the throttle motor
What you can do
- 1Read and clear the fault code and check whether it returns
- 2Check that the connector at the throttle unit is correctly seated and that its latch has clicked into place
- 3Check the connector for damage, play and oxidation
- 4If the throttle feels sluggish or the engine loses power, drive carefully and have a workshop check the car
- 5Have a workshop check whether the engine control module software needs updating
Symptoms you may notice2
- The malfunction indicator lamp (MIL) is lit
- Poor response from the accelerator pedal
General guidance for car owners. Diagnosis on the car can point to a different cause.