VOLVO
ECM-91C0 - Throttle module. Signal outside its permitted range
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
4 modelsC30 (2007–2013), C70 (2006–2013), S40 (2004–2013), V50 (2004–2013)
Show models by year and engine (10)
- Volvo C30 (2007–2013)2007Engine D5244T8, D5244T9 only
- Volvo C30 (2007–2013)2008–2010Engine D5244T13, D5244T8, D5244T9 only
- Volvo C70 (2006–2013)2007Engine D5244T8, D5244T9 only
- Volvo C70 (2006–2013)2008–2010Engine D5244T13, D5244T8, D5244T9 only
- Volvo S40 (2004–2013)2006Engine D5244T8 only
- Volvo S40 (2004–2013)2007Engine D5244T8, D5244T9 only
- Volvo S40 (2004–2013)2008–2010Engine D5244T13, D5244T8, D5244T9 only
- Volvo V50 (2004–2013)2006Engine D5244T8 only
- Volvo V50 (2004–2013)2007Engine D5244T8, D5244T9 only
- Volvo V50 (2004–2013)2008–2010Engine D5244T13, D5244T8, D5244T9 only
What does this fault code mean?
The engine control module (ECM) compares the signals from the throttle unit position sensors with the stored value. If the offset from the stored value is unreasonably large, or the adaptive limit values for the throttle are incorrect, the code is set. The cause can be a sticking or jammed throttle, or a damaged throttle unit.
Possible causes
- The throttle in the throttle unit sticks or has jammed
- Damaged throttle unit
What you can do
- 1Check the connector at the throttle unit for play, contact resistance and oxidation
- 2Check that the throttle is not blocked and has not stuck, and clean it if necessary
- 3Erase the fault code and test drive. If it returns, have a workshop check the throttle unit and carry out the adaptation
Symptoms you may notice1
- The car's performance is reduced
What the fault can affect1
- Engine torque is limited
General guidance for car owners. Diagnosis on the car can point to a different cause.