VOLVO
ECM-P065B00 - Generator control circuit range/performance. General Failure Information. No sub type information
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
5 modelsS80 (2007–), V70 (2008–), XC60 (2009–), XC70 (2008–), XC90 (2003–)
Show models by year and engine (9)
- Volvo S80 (2007–)2007Engine D5244T4, D5244T5 only
- Volvo S80 (2007–)2008–2009Engine B4204S3, B4204S4, D5244T4, D5244T5 only
- Volvo S80 (2007–)2010–2011Engine B4204S3, B4204S4, D4164T only
- Volvo V70 (2008–)2008–2009Engine B4204S3, B4204S4, D5244T4, D5244T5 only
- Volvo V70 (2008–)2010–2011Engine B4204S3, B4204S4, D4164T 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 ECM offsets engine torque to account for the load from the alternator. The code is set when that compensation goes beyond a limit value.
Possible causes
- Damaged battery
- Fault in the charging system
- Overloaded or damaged alternator
- A charger with too high charge voltage was hooked up before
- Worn carbon brushes
- Damaged alternator control module (ACM), which holds the charge regulator
What you can do
- 1Check that the fuses are intact and that the battery is in good condition
- 2Where possible, check the relevant functions of the car with the buttons, controls or a test drive
- 3If a charger with too high charge voltage has been hooked up before, tell the workshop
- 4Read the fault status after the test drive and see whether the fault is still active
- 5Have a workshop check the alternator's carbon brushes and the charge regulator
Symptoms you may notice1
- The battery discharges
General guidance for car owners. Diagnosis on the car can point to a different cause.