VOLVO
ECM-P211977 - Throttle Actuator Control Throttle Body Range/Performance. Mechanical Failures. Commanded position not reachable
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
7 modelsS60 (2011–), S80 (2007–), V40 (2013–), V40 Cross Country (2013–), V60 (2011–), V70 (2008–), XC60 (2009–)
Show models by year and engine (20)
- Volvo S60 (2011–)2011Engine B4164T, B4164T3, B4204T6, B4204T7 only
- Volvo S60 (2011–)2012–2014Engine B4164T, B4164T2, B4164T3, B4204T7 only
- Volvo S60 (2011–)2015Engine B4164T, B4164T2, B4164T3 only
- Volvo S80 (2007–)2010Engine B4204T6 only
- Volvo S80 (2007–)2011Engine B4164T, B4204T6, B4204T7 only
- Volvo S80 (2007–)2012–2014Engine B4164T, B4164T2, B4204T6, B4204T7 only
- Volvo S80 (2007–)2015Engine B4164T only
- Volvo V40 (2013–)2013Engine B4164T, B4164T3 only
- Volvo V40 (2013–)2014–2015Engine B4164T, B4164T3, B4164T4 only
- Volvo V40 Cross Country (2013–)2013–2015Engine B4164T only
- Volvo V60 (2011–)2011Engine B4164T, B4164T3, B4204T6, B4204T7 only
- Volvo V60 (2011–)2012–2014Engine B4164T, B4164T2, B4164T3, B4204T7 only
- Volvo V60 (2011–)2015Engine B4164T, B4164T2, B4164T3 only
- Volvo V70 (2008–)2010Engine B4204T6 only
- Volvo V70 (2008–)2011Engine B4164T, B4204T6, B4204T7 only
- Volvo V70 (2008–)2012–2014Engine B4164T, B4164T2, B4204T7 only
- Volvo V70 (2008–)2015Engine B4164T, B4164T2 only
- Volvo XC60 (2009–)2010Engine B4204T6 only
- Volvo XC60 (2009–)2011–2012Engine B4204T6, B4204T7 only
- Volvo XC60 (2009–)2013–2015Engine B4204T7 only
What does this fault code mean?
With the engine running, the engine control module has noticed that the desired throttle position (the set value) and the actual throttle position (the measured value) do not match. The fault may be mechanical, but it can also come from poor contact or a wiring fault.
Possible causes
- The throttle sticks or is blocked, for example by oil film or dust
- Contact resistance or oxidation in the connections between the control module and the throttle unit
- An open circuit, or a short to ground or supply voltage, in the wiring to the throttle motor
- The wires to the throttle motor have shorted to each other
- Damaged throttle unit
What you can do
- 1Read the codes in the control module first. Codes for the throttle unit, the position sensor and the control module must be dealt with first
- 2Check that the throttle is not sticking or blocked, and clean the throttle unit if needed
- 3Check the connectors at the throttle unit and the engine control module for contact resistance and oxidation
- 4Look for breaks and chafing in the wiring to the throttle motor, and use a multimeter to check that it is not shorted to ground, supply voltage or other wires
- 5If the code comes back, have a workshop with diagnostic equipment check the throttle unit and the engine control module
Symptoms you may notice1
- Uneven idle
What the fault can affect1
- The throttle motor receives no supply, and the throttle is turned to its spring-loaded position
General guidance for car owners. Diagnosis on the car can point to a different cause.