VOLVO
ECM-P256600 - Turbocharger Boost Control Position Sensor A Circuit Intermittent. General Failure Information. No sub type information
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), S40 (2004–2013), S60 (2011–), S80 (2007–), V40 (2013–), V40 Cross Country (2013–), V50 (2004–2013), V60 (2011–), V70 (2008–)
Show models by year and engine (9)
- Volvo C30 (2007–2013)2011–2013Engine D4162T only
- Volvo S40 (2004–2013)2011–2012Engine D4162T only
- Volvo S60 (2011–)2011–2015Engine D4162T only
- Volvo S80 (2007–)2012–2015Engine D4162T only
- Volvo V40 (2013–)2013–2015Engine D4162T only
- Volvo V40 Cross Country (2013–)2013–2015Engine D4162T only
- Volvo V50 (2004–2013)2011–2012Engine D4162T only
- Volvo V60 (2011–)2011–2015Engine D4162T only
- Volvo V70 (2008–)2012–2015Engine D4162T only
What does this fault code mean?
The fault is intermittent: the signal from the position sensor for the turbo's variable guide vanes has at some point been irregular or missing. The fault may be gone right now, so it can be hard to see on a short test drive.
Possible causes
- Loose connections
- Contact resistance or oxidation in the connections
- Moisture in the air intake system
- Damaged position sensor
What you can do
- 1Check that the connector to the turbo position sensor is firmly seated and free from oxidation
- 2Check the air intake system for moisture or water
- 3If you have a diagnostic tool: follow the position sensor value in live data with the engine running and see whether it jumps or drops out
- 4Erase the code and test drive; if it returns, have a workshop check the position sensor
Symptoms you may notice1
- Check engine light comes on or behaves abnormally
What the fault can affect1
- Exhaust gas recirculation (EGR) control stops
General guidance for car owners. Diagnosis on the car can point to a different cause.