VOLVO
ECM-P007B21 - Charge Air Cooler Temperature Sensor Circuit Range/Performance (Bank 1). General Signal Failures. Signal too low
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
5 modelsS60 (2011–), S80 (2007–), V60 (2011–), V70 (2008–), XC60 (2009–)
Show models by year and engine (12)
- Volvo S60 (2011–)2011Engine B4204T6, B4204T7 only
- Volvo S60 (2011–)2012–2014Engine B4204T7 only
- Volvo S80 (2007–)2010Engine B4204T6 only
- Volvo S80 (2007–)2011–2014Engine B4204T6, B4204T7 only
- Volvo V60 (2011–)2011Engine B4204T6, B4204T7 only
- Volvo V60 (2011–)2012–2014Engine B4204T7 only
- Volvo V70 (2008–)2010Engine B4204T6 only
- Volvo V70 (2008–)2011Engine B4204T6, B4204T7 only
- Volvo V70 (2008–)2012–2014Engine B4204T7 only
- Volvo XC60 (2009–)2010Engine B4204T6 only
- Volvo XC60 (2009–)2011–2012Engine B4204T6, B4204T7 only
- Volvo XC60 (2009–)2013–2015Engine B4204T7 only
What does this fault code mean?
The boost pressure sensor (TMAP) measures both boost pressure and temperature. The fault code is set when the temperature signal is unreasonably low. Possible causes are a poor connection or a damaged sensor.
Possible causes
- Loose connection, contact resistance or oxidation in the connector
- Damaged boost pressure sensor (TMAP)
What you can do
- 1Check that the boost pressure sensor connector is fully seated and free from oxidation
- 2Look for cracks or damage on the sensor housing and the wire
- 3If you have a diagnostic tool: after the engine has been off for a longer period, read the sensor temperature in live data and compare it with the ambient temperature
- 4If the connector is in good condition but the temperature still differs, have a workshop check the boost pressure sensor
Symptoms you may notice1
- No noticeable symptoms for the driver
What the fault can affect1
- The engine control module uses a calculated value instead of the measured temperature
General guidance for car owners. Diagnosis on the car can point to a different cause.