VOLVO
ECM-980F - Air flow. Faulty flow
Układ
Sterownik silnika (ECM)
Modele Volvo, których dotyczy ten kod błędu
Dotyczy następujących modeli:
7 modeliC70 Cabriolet (1998–2005), C70 Coupé (1998–2002), S60 (2001–2009), S70 (1997–2000), S80 (1999–2006), V70 (1997–2000), V70 (2000–2008)
Pokaż modele wg rocznika i silnika (17)
- Volvo C70 Cabriolet (1998–2005)2000Tylko silnik: B5244S
- Volvo C70 Coupé (1998–2002)2000Tylko silnik: B5244S
- Volvo S60 (2001–2009)2001Tylko silnik: B5244S, B5244S2
- Volvo S60 (2001–2009)2002Tylko silnik: B5244S, B5244S2, B5244SG, B5244SG2
- Volvo S60 (2001–2009)2003–2005Tylko silnik: B5244SG, B5244SG2
- Volvo S60 (2001–2009)2006–2008Tylko silnik: B5244SG
- Volvo S70 (1997–2000)2000Tylko silnik: B5244S, B5244S2, B5244SG, B5244SG2
- Volvo S80 (1999–2006)2000Tylko silnik: B5244S, B5244S2
- Volvo S80 (1999–2006)2001Tylko silnik: B5244S, B5244S2, B5244SG
- Volvo S80 (1999–2006)2002Tylko silnik: B5244S, B5244S2, B5244SG, B5244SG2
- Volvo S80 (1999–2006)2003–2005Tylko silnik: B5244SG, B5244SG2
- Volvo S80 (1999–2006)2006Tylko silnik: B5244SG
- Volvo V70 (1997–2000)2000Tylko silnik: B5244S, B5244S2, B5244SG, B5244SG2
- Volvo V70 (2000–2008)2001Tylko silnik: B5244S, B5244S2, B5244SG
- Volvo V70 (2000–2008)2002Tylko silnik: B5244S, B5244S2, B5244SG, B5244SG2
- Volvo V70 (2000–2008)2003–2005Tylko silnik: B5244SG, B5244SG2
- Volvo V70 (2000–2008)2006–2008Tylko silnik: B5244SG
Co oznacza ten kod błędu?
The ECM works out the air mass entering the engine from throttle position, engine speed, air temperature and atmospheric pressure, among other inputs. The calculated value is compared with the signals from the air mass meter and the intake pressure sensor. If either sensor deviates enough, the code is stored.
Możliwe przyczyny
- Faulty signal from one of the sensors
- Exhaust camshaft has slipped a tooth
- Air leakage after the air mass meter
- Defective intake manifold pressure sensor
- Defective air mass meter
- Defective engine control module
Co możesz zrobić
- 1Check for air leaks after the air mass meter, in the hoses and connections on the intake side
- 2If you have a diagnostic tool: read air mass and intake manifold pressure in live data at idle and when pressing the throttle; they should follow engine load
- 3Check that the air mass meter and the intake manifold pressure sensor are firmly fitted and have clean connectors
- 4If the exhaust camshaft may have slipped a tooth, have a workshop check the camshaft position against the crankshaft
- 5Uneven idle can come from the control module running on substitute values, which is not the same as a drivability fault that existed before. After repair: clear the code and test drive
Objawy, które możesz zauważyć2
- Uneven idle
- Malfunction indicator lamp lit
Na co może wpływać usterka3
- The throttle closes under braking, and pedal input is ignored while the brake is pressed
- Cruise control is switched off for the driving cycle in which the fault was detected
- Engine speed is limited by fuel cut-off and capped at a low value
Ogólne wskazówki dla właścicieli. Diagnostyka na samochodzie może wskazać inną przyczynę.