VOLVO
ECM-990F - Torque monitoring. Faulty signal
Układ
Sterownik silnika (ECM)
Modele Volvo, których dotyczy ten kod błędu
Dotyczy następujących modeli:
7 modeliC30 (2007–2013), C70 (2006–2013), S40 (2004–2013), S60 (2001–2009), S80 (1999–2006), V50 (2004–2013), V70 (2000–2008)
Pokaż modele wg rocznika i silnika (13)
- Volvo C30 (2007–2013)2007–2011Tylko silnik: B5244S4
- Volvo C70 (2006–2013)2006Wszystkie silniki oprócz: B5254T3
- Volvo C70 (2006–2013)2007–2010Tylko silnik: B5244S4, B5244S5
- Volvo C70 (2006–2013)2011Tylko silnik: B5244S4
- Volvo S40 (2004–2013)2004Tylko silnik: B5244S4, B5244S5
- Volvo S40 (2004–2013)2005–2010Tylko silnik: B5244S4, B5244S5, B5244S7
- Volvo S60 (2001–2009)2003–2006Tylko silnik: B5244S, B5244S2, B5244S6
- Volvo S60 (2001–2009)2007–2009Tylko silnik: B5244S, B5244S2
- Volvo S80 (1999–2006)2003–2006Tylko silnik: B5244S, B5244S2
- Volvo V50 (2004–2013)2004Tylko silnik: B5244S4, B5244S5
- Volvo V50 (2004–2013)2005–2010Tylko silnik: B5244S4, B5244S5, B5244S7
- Volvo V70 (2000–2008)2003–2006Tylko silnik: B5244S, B5244S2, B5244S6
- Volvo V70 (2000–2008)2007–2008Tylko silnik: B5244S, B5244S2
Co oznacza ten kod błędu?
The engine control module (ECM) measures engine torque by reading the acceleration of the flywheel and compares it with the torque requested by the accelerator pedal. Here the engine has produced more torque than requested, so the module has limited torque by cutting the fuel. The fault most likely comes from another problem in the system that produces too much torque.
Możliwe przyczyny
- Air leak after the mass air flow (MAF) sensor
- Fault in the mass air flow (MAF) sensor
- Problem with the electronic throttle unit (ETM)
- Problem with the flywheel sensor
- Problem with variable valve timing (VVT) control
- Exhaust camshaft has jumped teeth
Co możesz zrobić
- 1Read the fault codes in the engine control module and fault-trace the other codes first, since this code is most likely set together with codes for failing components
- 2Check that the mass air flow sensor hoses and connections are secure and airtight so that no false air enters after the sensor
- 3Check that the connectors to the throttle unit and the flywheel sensor are secure and free from oxidation
- 4With a diagnostic tool, compare the ranking values; a high Worst with a low Latest points to an intermittent fault or one that is not active
- 5Clear the fault code after the repair and road test the car to see whether it returns
Objawy, które możesz zauważyć1
- Jerky driving
Na co może wpływać usterka3
- The cruise control is disengaged while the fault is active
- Engine speed and torque are limited by cutting the fuel supply
- How far they are limited depends on the accelerator pedal position
Ogólne wskazówki dla właścicieli. Diagnostyka na samochodzie może wskazać inną przyczynę.