VOLVO
ECM-P001662 - Crankshaft Position - Camshaft Position Correlation - Bank 1 Sensor A. Algorithm Based Failures. Signal compare failure
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
12 modelsC30 (2007–2013), S40 (2004–2013), S60 (2011–), S80 (2007–), V40 (2013–), V40 Cross Country (2013–), V50 (2004–2013), V60 (2011–), V70 (2008–), XC60 (2009–), XC70 (2008–), XC90 (2003–)
Show models by year and engine (23)
- Volvo C30 (2007–2013)2011–2013Engine D4162T only
- Volvo S40 (2004–2013)2011–2012Engine D4162T only
- Volvo S60 (2011–)2011–2012Engine B5254T5, D4162T only
- Volvo S60 (2011–)2013–2015Engine D4162T only
- Volvo S80 (2007–)2007All engines except: B6324S, B8444S
- Volvo S80 (2007–)2008Engine B5254T6, D5244T4, D5244T5 only
- Volvo S80 (2007–)2009Engine B5254T6, B5254T8, D5244T4, D5244T5 only
- Volvo S80 (2007–)2010–2011Engine B5254T10, B5254T11, B5254T8 only
- Volvo S80 (2007–)2012Engine B5254T10, D4162T only
- Volvo S80 (2007–)2013–2015Engine 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–)2008Engine B5254T6, D5244T4, D5244T5 only
- Volvo V70 (2008–)2009Engine B5254T6, B5254T8, D5244T4, D5244T5 only
- Volvo V70 (2008–)2010–2011Engine B5254T10, B5254T11 only
- Volvo V70 (2008–)2012Engine B5254T10, D4162T only
- Volvo V70 (2008–)2013–2015Engine D4162T only
- Volvo XC60 (2009–)2009All engines except: B6304T2
- Volvo XC70 (2008–)2008All engines except: B6324S
- Volvo XC70 (2008–)2009Engine D5244T4, D5244T5 only
- Volvo XC90 (2003–)2013–2014Engine D5244T18, D5244T5 only
What does this fault code mean?
The engine control module compares the speed from the crankshaft sensor with the speed from the camshaft sensor. If the calculated crankshaft sensor speed is lower than the camshaft sensor speed, it is treated as a fault and the code is set as a comparison failure. The code can also be set when the intake camshaft adaptation is too high, which means the camshaft is ahead of the crankshaft.
Possible causes
- Open circuit or short in the signal wire
- Poor contact or oxidation in the connections
- Faulty crankshaft sensor
- Faulty camshaft sensor
- Incorrectly set camshafts
- Timing belt has skipped teeth
What you can do
- 1Read the code, clear it and road test the car to see whether it returns
- 2Check that the connectors at the crankshaft sensor and camshaft sensor are secure and not oxidised
- 3Use a multimeter to check that the wires to the crankshaft sensor have no open circuit and no contact with ground or supply voltage
- 4Check the engine oil level and quality, especially if it may be contaminated
- 5If you have a diagnostic tool: read the speeds from the crankshaft sensor and camshaft sensor in live data with the engine idling, and check whether they agree
- 6If the fault returns: have a workshop check the timing belt, the camshaft setting and the control valve
Symptoms you may notice5
- Engine does not start, the starter turns but the engine does not fire
- Engine stalls
- Engine is hard to start and cranks slowly
- The car lacks power
- Check engine lamp lit or behaving abnormally
What the fault can affect1
- Camshaft control is switched off
General guidance for car owners. Diagnosis on the car can point to a different cause.