VOLVO
ECM-P001721 - Crankshaft Position - Camshaft Position Correlation - Bank 1 Sensor B. General Signal Failures. Signal too low
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
9 modelsS60 (2011–), S80 (2007–), V40 (2013–), V40 Cross Country (2013–), V60 (2011–), V60 Cross Country (2015–), V70 (2008–), XC60 (2009–), XC70 (2008–)
Show models by year and engine (19)
- Volvo S60 (2011–)2013Engine B5204T8, B5204T9, B5254T12, B5254T14 only
- Volvo S60 (2011–)2014–2015Engine B4204T10, B4204T11, B4204T12, B4204T15, B4204T9, B5204T8, B5204T9, B5254T12, B5254T14 only
- Volvo S80 (2007–)2010–2011Engine B8444S only
- Volvo S80 (2007–)2013Engine B5254T12, B5254T14 only
- Volvo S80 (2007–)2014Engine B4204T11, B4204T12, B4204T15, B5254T12, B5254T14 only
- Volvo S80 (2007–)2015Engine B4204T11, B4204T12, B4204T15 only
- Volvo V40 (2013–)2013–2014Engine B5204T8, B5204T9, B5254T12, B5254T14 only
- Volvo V40 (2013–)2015Engine B4204T11, B5204T8, B5204T9 only
- Volvo V40 Cross Country (2013–)2013–2014Engine B5204T8, B5204T9, B5254T12, B5254T14 only
- Volvo V40 Cross Country (2013–)2015All engines except: B4164T, D4162T, D4204T14, D5204T6
- Volvo V60 (2011–)2013Engine B5204T8, B5204T9 only
- Volvo V60 (2011–)2014Engine B4204T11, B4204T12, B4204T15, B4204T9, B5204T8, B5204T9, B5254T12 only
- Volvo V60 (2011–)2015Engine B4204T11, B4204T12, B4204T15, B4204T9, B5204T9, B5254T12 only
- Volvo V60 Cross Country (2015–)2015
- Volvo V70 (2008–)2013Engine B5204T9 only
- Volvo V70 (2008–)2014–2015Engine B4204T11, B5204T9 only
- Volvo XC60 (2009–)2014Engine B4204T10, B4204T11, B4204T12, B4204T15, B4204T9 only
- Volvo XC60 (2009–)2015Engine B4204T10, B4204T11, B4204T12, B4204T15, B4204T9, B5204T9, B5254T12, B5254T14 only
- Volvo XC70 (2008–)2014–2015Engine B4204T11 only
What does this fault code mean?
The engine control module compares the exhaust camshaft position with the crankshaft position and adjusts the adaptation when they do not agree. The code concerns sensor B, bank 1, and is set when the adaptation value falls below a limit. Adaptation is carried out during engine braking.
Possible causes
- Incorrectly set camshafts
- Damaged VVT unit
What you can do
- 1Read the code and note whether it is active right now or only stored
- 2If you have a diagnostic tool: compare the exhaust camshaft timing angle with the target value in live data with the engine running
- 3Check the engine oil level and that the oil is clean and of the right quality
- 4Have a workshop check the camshaft basic setting
- 5Have a workshop clean the control valve, or try a new one if the fault remains
- 6If the fault returns: have a workshop check the VVT unit
Symptoms you may notice5
- The car lacks power when pulling away from standstill
- Engine is hard to start and cranks slowly
- Uneven idle
- Engine stalls while driving
- Check engine lamp lit or behaving abnormally
What the fault can affect1
- The control module uses a fixed value for the camshaft adaptation
General guidance for car owners. Diagnosis on the car can point to a different cause.