VOLVO
ECM-P064E68 - Internal Control Module O2 Sensor Processor Performance - Bank 2. Algorithm Based Failures. Event 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 (10)
- Volvo S80 (2007–)2007–2010Engine B6324S only
- Volvo S80 (2007–)2011–2015Engine B6324S5 only
- Volvo V70 (2008–)2008–2010Engine B6324S only
- Volvo V70 (2008–)2011–2014Engine B6324S5 only
- Volvo XC60 (2009–)2010Engine B6324S only
- Volvo XC60 (2009–)2011–2015Engine B6324S5 only
- Volvo XC70 (2008–)2008–2010Engine B6324S only
- Volvo XC70 (2008–)2011–2015Engine B6324S5 only
- Volvo XC90 (2003–)2007–2010Engine B6324S only
- Volvo XC90 (2003–)2011–2014Engine B6324S5 only
What does this fault code mean?
The bank 2 rear oxygen sensor signals have stayed above or below the permitted range for a longer period. This event-controlled code is meant as information and does not mean the control module where it appears is faulty. It can appear after a stretch of normal driving without heavy load, and it has little value for fault-finding.
Possible causes
- Leak in the exhaust system
- Contact resistance in the connections
- Damaged wiring harness
- Damaged oxygen sensor (HO2S)
What you can do
- 1Check whether other fault codes for the oxygen sensors or the exhaust system are stored, and trace those first
- 2Look for leaks in the exhaust system, especially at joints
- 3Check the connectors to the bank 2 rear oxygen sensor for contact resistance, oxidation and chafed wires
- 4If you have diagnostic equipment, compare the bank 2 rear oxygen sensor signal with the front one in live data while driving
- 5If the code returns after leaks and connectors have been checked, have a workshop check the oxygen sensor
Symptoms you may notice1
- No noticeable symptoms for the driver
General guidance for car owners. Diagnosis on the car can point to a different cause.