VOLVO
ECM-P009822 - Intake Air Temperature Sensor 2 Circuit High Input. General Signal Failures. Signal too low
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
5 modelsS80 (2007–), V70 (2008–), XC60 (2009–), XC70 (2008–), XC90 (2003–)
Show models by year and engine (6)
- Volvo S80 (2007–)2007–2009Engine D5244T4, D5244T5 only
- Volvo V70 (2008–)2008–2009Engine D5244T4, D5244T5 only
- Volvo XC60 (2009–)2009All engines except: B6304T2
- Volvo XC70 (2008–)2008All engines except: B6324S
- Volvo XC70 (2008–)2009Engine D5244T4, D5244T5 only
- Volvo XC90 (2003–)2013–2014Engine D5244T18, D5244T5 only
What does this fault code mean?
This fault code concerns the reading of the intake air temperature sensor at the inlet, which is either too low or too high. It can come from a short to voltage, an open circuit or a damaged sensor, but also from poor contact.
Possible causes
- Signal wire shorted to ground
- Contact resistance, oxidation or looseness in the connections
- Open circuit in the signal wire
- Signal wire shorted to voltage
- Damaged air temperature sensor at the inlet
What you can do
- 1With the ignition on, use a multimeter to check that the signal wire is not shorted to ground
- 2Look for loose connections and oxidation at the sensor
- 3If you have a diagnostic tool: read the sensor value in live data and check that it is reasonable for the intake air
- 4Have a workshop check the sensor if the wiring is in order
Symptoms you may notice1
- Check engine lamp (MIL) lights up
General guidance for car owners. Diagnosis on the car can point to a different cause.