VOLVO
ECM-P0A3B00 - Generator Over Temperature. General Failure Information. No sub type information
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
14 modelsC30 (2007–2013), C70 (2006–2013), S40 (2004–2013), S60 (2011–), S80 (2007–), V40 (2013–), V40 Cross Country (2013–), V50 (2004–2013), V60 (2011–), V60 Cross Country (2015–), V70 (2008–), XC60 (2009–), XC70 (2008–), XC90 (2003–)
Show models by year and engine (41)
- 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 B6304T4, D5204T2, D5244T10 only
- Volvo S60 (2011–)2012Engine B6304T4, D5204T3, D5244T11, D5244T15 only
- Volvo S60 (2011–)2013–2014All engines except: B4164T, B4164T2, B4164T3, B4204T7, D4162T
- Volvo S60 (2011–)2015All engines except: B4164T, B4164T2, B4164T3, D4162T
- Volvo S80 (2007–)2007Engine D5244T4, D5244T5 only
- Volvo S80 (2007–)2008Engine B4204S3, B4204S4, D5244T4, D5244T5 only
- Volvo S80 (2007–)2009Engine B4204S3, B4204S4, D5244T10, D5244T4, D5244T5 only
- Volvo S80 (2007–)2010All engines except: B4204T6, B5254T10, B5254T11, B5254T8, D4204T
- Volvo S80 (2007–)2011All engines except: B4164T, B4204T6, B4204T7, B5254T10, B5254T11, B5254T8
- Volvo S80 (2007–)2012Engine B6304T4, B6324S4, B6324S5, D5204T3, D5244T11, D5244T15 only
- Volvo S80 (2007–)2013–2014All engines except: B4164T, B4164T2, B4204T6, B4204T7, D4162T
- Volvo S80 (2007–)2015All engines except: B4164T, D4162T
- Volvo V40 (2013–)2013All engines except: B4164T, B4164T3, D4162T
- Volvo V40 (2013–)2014–2015All engines except: B4164T, B4164T3, B4164T4, D4162T
- Volvo V40 Cross Country (2013–)2013–2015All engines except: B4164T, D4162T
- Volvo V50 (2004–2013)2011–2012Engine D5204T, D5204T5 only
- Volvo V60 (2011–)2011Engine B6304T4, D5204T2, D5244T10 only
- Volvo V60 (2011–)2012Engine B6304T4, D5204T3, D5244T11, D5244T15 only
- Volvo V60 (2011–)2013–2014All engines except: B4164T, B4164T2, B4164T3, B4204T7, D4162T, D82PHEV
- Volvo V60 (2011–)2015All engines except: B4164T, B4164T2, B4164T3, D4162T, D82PHEV, D87PHEV
- Volvo V60 Cross Country (2015–)2015
- Volvo V70 (2008–)2008Engine B4204S3, B4204S4, D5244T4, D5244T5 only
- Volvo V70 (2008–)2009Engine B4204S3, B4204S4, D5244T10, D5244T4, D5244T5 only
- Volvo V70 (2008–)2010All engines except: B4204T6, B5254T10, B5254T11, D4204T
- Volvo V70 (2008–)2011All engines except: B4164T, B4204T6, B4204T7, B5254T10, B5254T11
- Volvo V70 (2008–)2012Engine B6304T4, B6324S5, D5204T3, D5244T11, D5244T15 only
- Volvo V70 (2008–)2013–2014All engines except: B4164T, B4164T2, B4204T7, D4162T
- Volvo V70 (2008–)2015All engines except: B4164T, B4164T2, D4162T
- Volvo XC60 (2009–)2009All engines except: B6304T2
- Volvo XC60 (2009–)2010All engines except: B4204T6
- Volvo XC60 (2009–)2011–2012All engines except: B4204T6, B4204T7
- Volvo XC60 (2009–)2013–2015All engines except: B4204T7
- Volvo XC70 (2008–)2008All engines except: B6324S
- Volvo XC70 (2008–)2009Engine D5244T4, D5244T5 only
- Volvo XC70 (2008–)2010–2015
- Volvo XC90 (2003–)2011–2012Engine B6324S5 only
- Volvo XC90 (2003–)2013–2014All engines except: B5254T9
What does this fault code mean?
The generator is controlled by the generator control module (ACM), which receives its instructions from the engine control module over LIN. The code is set when the generator has become too hot according to the status from the ACM. Single occurrences may be entirely normal, and the fault is then most likely due to a combination of high ambient temperature, heavy load and reduced cooling in the engine bay.
Possible causes
- One of the fault codes ECM-P065A01 or ECM-P065A07 is stored
- Air intake or air outlet to the generator is blocked
- Reduced airflow or cooling in the engine bay
- Damaged auxiliary drive belt or belt tensioner
- Worn generator brushes (carbon)
- Contact resistance or oxidation in the connectors
What you can do
- 1Check that the air intake and air outlet to the generator are not blocked
- 2Check that the fuses are intact. The locations are shown in the instruction manual or on the fuse list
- 3Check that the drive belt and belt tensioner are intact and correctly fitted
- 4Where possible, check on a test drive that the electric cooling fan and charging work, to establish the status of the fault
- 5If the fault code is set again after driving, have a workshop check the generator
Symptoms you may notice4
- The battery loses voltage or is dead
- The charging warning lights or behaves abnormally
- The electric cooling fan runs all the time while the engine is running
- The engine does not start, either always or on some occasions
General guidance for car owners. Diagnosis on the car can point to a different cause.