VOLVO
ECM-1200 - Intake air temperature (IAT) sensor inlet. Signal too low
System
Engine Control Module (ECM)
Volvo models this fault code applies to
This fault code has different meanings depending on model, model year or engine. Select the meaning that applies to your car.
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 (28)
- Volvo C30 (2007–2013)2007Engine D5244T8, D5244T9 only
- Volvo C30 (2007–2013)2008, 2010Engine D5244T13, D5244T8, D5244T9 only
- Volvo C30 (2007–2013)2009Engine D4164T, 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 S40 (2004–2013)2009Engine D4164T, D5244T13, D5244T8, D5244T9 only
- Volvo S60 (2001–2009)2003–2005Engine B5244S, B5244S2, B5244S6, B5244SG, B5244SG2 only
- Volvo S60 (2001–2009)2006All engines except: B5204T5, B5244T4, B5244T5, B5254T2, B5254T4, D5244T, D5244T2
- Volvo S60 (2001–2009)2007All engines except: B5204T5, B5244T5, B5254T2, B5254T4
- Volvo S60 (2001–2009)2008–2009All engines except: B5204T5, B5244T5, B5254T2
- Volvo S80 (1999–2006)2003–2005Engine B5244S, B5244S2, B5244SG, B5244SG2 only
- Volvo S80 (1999–2006)2006Engine B5244S, B5244S2, B5244SG 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
- Volvo V50 (2004–2013)2009Engine D4164T, D5244T13, D5244T8, D5244T9 only
- Volvo V70 (2000–2008)2003–2005Engine B5244S, B5244S2, B5244S6, B5244SG, B5244SG2 only
- Volvo V70 (2000–2008)2006All engines except: B5204T5, B5244T5, B5254T2, B5254T4, D5244T, D5244T2
- Volvo V70 (2000–2008)2007All engines except: B5204T5, B5244T5, B5254T2, B5254T4
- Volvo V70 (2000–2008)2008All engines except: B5254T2
- Volvo V70 XC / XC70 (2001–2007)2006–2007Engine D5244T4 only
- Volvo XC90 (2003–)2006–2007Engine D5244T4 only
- Volvo XC90 (2003–)2008–2010Engine D5244T4, D5244T5 only
- Volvo XC90 (2003–)2011Engine D5244T18, D5244T4, D5244T5 only
- Volvo XC90 (2003–)2012All engines except: B5254T2, B6324S5
What does this fault code mean?
The engine control module has found a signal from the intake air temperature sensor that is too low. The sensor sits inside the mass air flow sensor, so the fault may lie in the wiring, the connector or the sensor itself. A message may appear in the text display.
Possible causes
- Signal wire short-circuited to ground
- Contact resistance, poor contact or oxidation in the connections
- Open circuit in the signal wire
- Damaged intake air temperature sensor inside the mass air flow sensor
What you can do
- 1Read and note the code, clear it and road test to see whether it returns
- 2Check the connectors at the mass air flow sensor for play, contact resistance and oxidation
- 3Use a multimeter to check that the signal wire is not broken and has no short to ground
- 4With your own diagnostic tool, check that the air temperature in live data is reasonable and matches the surroundings when the engine is cold
- 5If the fault remains with clean connectors and an intact wire, have a workshop check the mass air flow sensor, since the temperature sensor is inside it
Symptoms you may notice2
- The malfunction indicator lamp comes on
- A message is shown in the text display
General guidance for car owners. Diagnosis on the car can point to a different cause.