VOLVO
ECM-92B0 - Electronic throttle unit. Faulty signal
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
9 modelsC30 (2007–2013), C70 (2006–2013), S40 (2004–2013), S60 (2001–2009), S80 (1999–2006), V50 (2004–2013), V70 (2000–2008), V70 XC / XC70 (2001–2007), XC90 (2003–)
Show models by year and engine (23)
- Volvo C30 (2007–2013)2007Engine B5254T3 only
- Volvo C30 (2007–2013)2008–2013Engine B5254T7 only
- Volvo C70 (2006–2013)2006–2007Engine B5254T3 only
- Volvo C70 (2006–2013)2008–2013Engine B5254T7 only
- Volvo S40 (2004–2013)2005–2007Engine B5254T3 only
- Volvo S40 (2004–2013)2008Engine B5254T3, B5254T7 only
- Volvo S40 (2004–2013)2009–2012Engine B5254T7 only
- Volvo S60 (2001–2009)2005–2006Engine B5204T5, B5244T4, B5244T5, B5254T2, B5254T4 only
- Volvo S60 (2001–2009)2007Engine B5204T5, B5244T5, B5254T2, B5254T4 only
- Volvo S60 (2001–2009)2008–2009Engine B5204T5, B5244T5, B5254T2 only
- Volvo S80 (1999–2006)2005–2006Engine B5204T5, B5244T4, B5254T2, B6294S2, B6294T only
- Volvo V50 (2004–2013)2005–2007Engine B5254T3 only
- Volvo V50 (2004–2013)2008–2012Engine B5254T7 only
- Volvo V70 (2000–2008)2005Engine B5204T5, B5244T4, B5244T5, B5254T2, B5254T4 only
- Volvo V70 (2000–2008)2006–2007Engine B5204T5, B5244T5, B5254T2, B5254T4 only
- Volvo V70 (2000–2008)2008Engine B5254T2 only
- Volvo V70 XC / XC70 (2001–2007)2005All engines except: D5244T
- Volvo V70 XC / XC70 (2001–2007)2006Engine B5244T4, B5254T2 only
- Volvo V70 XC / XC70 (2001–2007)2007Engine B5254T2 only
- Volvo XC90 (2003–)2005–2006Engine B5254T2, B6294T only
- Volvo XC90 (2003–)2007–2012Engine B5254T2 only
- Volvo XC90 (2003–)2013–2014Engine B5254T9 only
- Volvo XC90 (2003–)2015
What does this fault code mean?
The ECM cannot complete the throttle unit's first adaptation, because the programmed limit for the mechanical stop position of the throttle position sensor has been exceeded. Adaptation is normally done at manufacture and must be repeated after a software, ECM or throttle unit change. Although the code is titled faulty signal, it concerns this adaptation.
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
- No new adaptation has been done after a software, ECM or throttle unit change
- A damaged throttle unit
What you can do
- 1Read the fault codes. Other stored codes should be dealt with first, as they may be why the adaptation cannot be completed
- 2Check the connectors at the throttle unit and the ECM: are they secure and free from corrosion
- 3Check that the throttle is not blocked by any object and not sticking. Clean as needed
- 4If you have a diagnostic tool: check in the parameters whether the throttle unit adaptation shows OK. The adaptation itself is carried out by a workshop
- 5After a software, ECM or throttle unit change the adaptation must be repeated. Have a workshop with diagnostic equipment do this
- 6If the fault remains after this, the throttle unit may be damaged. It would then need replacing, and the new unit must be adapted by a workshop
Symptoms you may notice3
- Malfunction indicator lamp (MIL) on
- Reduced performance
- Uneven idle
What the fault can affect3
- The ECM falls back on nominal values for the throttle unit's parameters
- The ECM cuts power to the throttle motor, so the throttle goes to its return position
- The ECM may use a reversible fuel shut-off, meaning a temporary one
General guidance for car owners. Diagnosis on the car can point to a different cause.