VOLVO
ECM-P023522 - Turbo/Super Charger Boost Sensor A Circuit. General Signal Failures. Signal too high
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
3 modelsS60 (2011–), S80 (2007–), V70 (2008–)
Show models by year and engine (9)
- Volvo S60 (2011–)2011–2012Engine B5254T5 only
- Volvo S80 (2007–)2007–2008Engine B5254T6 only
- Volvo S80 (2007–)2009Engine B5254T6, B5254T8 only
- Volvo S80 (2007–)2010–2011Engine B5254T10, B5254T11, B5254T8 only
- Volvo S80 (2007–)2012Engine B5254T10 only
- Volvo V70 (2008–)2008Engine B5254T6 only
- Volvo V70 (2008–)2009Engine B5254T6, B5254T8 only
- Volvo V70 (2008–)2010–2011Engine B5254T10, B5254T11 only
- Volvo V70 (2008–)2012Engine B5254T10 only
What does this fault code mean?
The ECM tracks the reading from the boost pressure sensor. The fault is set when the signal has stayed above a certain value for a while, which points to a fault in the signal path between the sensor and the control module.
Possible causes
- Contact resistance or oxidation in the connections
- Signal wire shorted to voltage
- Open circuit in the signal wire
- Damaged 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 sensor signal in live data with the ignition on, before starting the engine. Note whether the value is already high
- 3Look at the boost pressure sensor connector for oxidation and loose connections
- 4Use a multimeter to check that the signal wire is not broken and not shorted to positive
- 5If the fault remains, have a workshop check the boost pressure sensor with diagnostic equipment
Symptoms you may notice2
- The malfunction indicator lamp comes on
- The car performs worse than usual
What the fault can affect1
- The engine runs with limited boost pressure
General guidance for car owners. Diagnosis on the car can point to a different cause.