VOLVO
ECM-P066B00 - Cylinder 1 Glow Plug Control Circuit High. 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:
12 modelsC30 (2007–2013), C70 (2006–2013), S40 (2004–2013), S60 (2011–), S80 (2007–), V40 (2013–), V40 Cross Country (2013–), V50 (2004–2013), V60 (2011–), V70 (2008–), XC60 (2009–), XC70 (2008–)
Show models by year and engine (43)
- Volvo C30 (2007–2013)2011–2013Engine D5204T, D5204T5 only
- Volvo C70 (2006–2013)2011Engine D5204T, D5204T5 only
- Volvo C70 (2006–2013)2012–2013All engines except: B5254T7
- Volvo S40 (2004–2013)2011–2012Engine D5204T, D5204T5 only
- Volvo S60 (2011–)2011Engine D5204T2, D5244T10 only
- Volvo S60 (2011–)2012Engine D5204T3, D5244T11, D5244T15 only
- Volvo S60 (2011–)2013Engine D5204T3, D5204T7, D5244T11, D5244T15 only
- Volvo S60 (2011–)2014Engine D4204T5, D5204T3, D5204T7, D5244T11, D5244T15 only
- Volvo S60 (2011–)2015Engine D4204T5, D5204T3, D5204T7, D5244T11, D5244T15, D5244T23 only
- Volvo S80 (2007–)2009Engine D5244T10 only
- Volvo S80 (2007–)2010Engine D5244T10, D5244T14, D5244T19 only
- Volvo S80 (2007–)2011Engine D5204T2, D5244T10 only
- Volvo S80 (2007–)2012Engine D5204T3, D5244T11, D5244T15 only
- Volvo S80 (2007–)2013Engine D5204T3, D5204T7, D5244T11, D5244T15 only
- Volvo S80 (2007–)2014Engine D4204T5, D5204T3, D5204T7, D5244T11, D5244T15 only
- Volvo S80 (2007–)2015Engine D4204T5, D5204T3, D5244T15 only
- Volvo V40 (2013–)2013–2014Engine D5204T4, D5204T6 only
- Volvo V40 (2013–)2015Engine D4204T14, D5204T6 only
- Volvo V40 Cross Country (2013–)2013–2014Engine D5204T4, D5204T6 only
- Volvo V40 Cross Country (2013–)2015Engine D4204T14, D5204T6 only
- Volvo V50 (2004–2013)2011–2012Engine D5204T, D5204T5 only
- Volvo V60 (2011–)2011Engine D5204T2, D5244T10 only
- Volvo V60 (2011–)2012Engine D5204T3, D5244T11, D5244T15 only
- Volvo V60 (2011–)2013Engine D5204T3, D5204T7, D5244T11, D5244T15, D5244T17, D82PHEV only
- Volvo V60 (2011–)2014Engine D4204T5, D5204T3, D5204T7, D5244T11, D5244T12, D5244T15, D5244T17, D82PHEV only
- Volvo V60 (2011–)2015Engine D4204T5, D5204T3, D5204T7, D5244T11, D5244T12, D5244T15, D5244T17, D5244T23, D82PHEV, D87PHEV only
- Volvo V70 (2008–)2009Engine D5244T10 only
- Volvo V70 (2008–)2010Engine D5244T10, D5244T14, D5244T19 only
- Volvo V70 (2008–)2011Engine D5204T2, D5244T10 only
- Volvo V70 (2008–)2012Engine D5204T3, D5244T11, D5244T15 only
- Volvo V70 (2008–)2013Engine D5204T3, D5204T7, D5244T11, D5244T15, D5244T17 only
- Volvo V70 (2008–)2014Engine D4204T5, D5204T3, D5204T7, D5244T11, D5244T12, D5244T15, D5244T17 only
- Volvo V70 (2008–)2015All engines except: B4164T, B4164T2, B4204T11, B5204T9, B6304T4, D4162T
- Volvo XC60 (2009–)2010Engine D5244T10, D5244T14, D5244T16 only
- Volvo XC60 (2009–)2011Engine D5204T2, D5244T10, D5244T16 only
- Volvo XC60 (2009–)2012Engine D5204T3, D5244T11, D5244T15, D5244T17 only
- Volvo XC60 (2009–)2013All engines except: B4204T7, B6304T4, B6324S4, B6324S5
- Volvo XC60 (2009–)2014Engine D4204T5, D5204T3, D5204T7, D5244T11, D5244T12, D5244T15, D5244T17 only
- Volvo XC60 (2009–)2015Engine D4204T5, D5204T3, D5204T7, D5244T11, D5244T12, D5244T15, D5244T17, D5244T23 only
- Volvo XC70 (2008–)2010Engine D5244T10, D5244T14, D5244T16 only
- Volvo XC70 (2008–)2011Engine D5204T2, D5244T10, D5244T16 only
- Volvo XC70 (2008–)2012–2013All engines except: B6304T4, B6324S4, B6324S5
- Volvo XC70 (2008–)2014–2015All engines except: B4204T11, B6304T4, B6324S4, B6324S5
What does this fault code mean?
The code concerns the control circuit of the glow plug in cylinder 1, where the signal is too high. The ECM controls the glow plugs through the glow plug control module and sets the code when it detects a fault on glow plug 1.
Possible causes
- Poor contact or oxidation in the connectors
- Open circuit in the signal wire
- Damaged glow plug control unit
- Glow plug 1 is short-circuited to supply voltage
What you can do
- 1Check that the fuses are intact and that the relevant functions work, using the buttons, controls or a test drive
- 2With the ignition off, check the connectors at the glow plug control module and at glow plug 1 for contact resistance and oxidation
- 3Use a multimeter to check that the signal wire to glow plug 1 has no open circuit and is not shorted to supply voltage
- 4If the connectors and wire are intact but the fault remains, have a workshop check glow plug 1 and the glow plug control module
Symptoms you may notice3
- The engine is hard to start and cranks slowly, at times or all the time
- The engine is hard to start and cranks slowly after use
- The engine is hard to start and cranks slowly on a cold start
General guidance for car owners. Diagnosis on the car can point to a different cause.