VOLVO
ECM-P023500 - Turbo/Super Charger Boost Sensor A Circuit. General Failure Information. No sub type information
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
7 modelsS60 (2011–), S80 (2007–), V60 (2011–), V70 (2008–), XC60 (2009–), XC70 (2008–), XC90 (2003–)
Show models by year and engine (14)
- Volvo S60 (2011–)2011–2014Engine B6304T4 only
- Volvo S60 (2011–)2015Engine B6304T3, B6304T4, B6304T5 only
- Volvo S80 (2007–)2007Engine D5244T4, D5244T5 only
- Volvo S80 (2007–)2008–2009Engine B6304T2, D5244T4, D5244T5 only
- Volvo S80 (2007–)2010–2011Engine D4164T only
- Volvo V60 (2011–)2011–2014Engine B6304T4 only
- Volvo V60 (2011–)2015Engine B6304T3, B6304T4, B6304T5 only
- Volvo V70 (2008–)2008–2009Engine B6304T2, D5244T4, D5244T5 only
- Volvo V70 (2008–)2010–2011Engine D4164T only
- Volvo XC60 (2009–)2009
- Volvo XC60 (2009–)2010Engine B6304T2 only
- Volvo XC60 (2009–)2011–2015Engine B6304T4 only
- Volvo XC70 (2008–)2008–2009All engines except: B6324S
- Volvo XC90 (2003–)2013–2014Engine D5244T18, D5244T5 only
What does this fault code mean?
The engine control module (ECM) compares the boost pressure sensor signal with atmospheric pressure, which it receives from an atmospheric pressure sensor built into the control module. The fault is set when the signal is too high, too low, erratic or implausible, or when boost and atmospheric pressure differ too much with the ignition on.
Possible causes
- Damaged boost pressure sensor
- Contact resistance or oxidation in the connections to the boost pressure sensor
What you can do
- 1Read the code, clear it and road test to see whether it returns
- 2If you have a diagnostic tool: read the boost pressure and the atmospheric pressure in live data with the ignition on. The two values should be close to each other
- 3Check that the fuses are intact. Fuse locations are shown in the owner's manual
- 4Look at the boost pressure sensor connector for oxidation, chafing and loose connections
- 5Use a multimeter to check that the signal wire to the boost pressure sensor is not shorted to ground or positive
- 6If the fault remains, have a workshop check the boost pressure sensor with diagnostic equipment
Symptoms you may notice3
- Rough idle
- The car feels poor to drive, with reduced performance and lack of power
- The check engine lamp comes on or behaves abnormally
What the fault can affect2
- A calculated boost pressure is used instead of the measured value
- Fuel adaptation is blocked
General guidance for car owners. Diagnosis on the car can point to a different cause.