P3468
Cylinder Deactivation Hydraulic Circuit Bank 1 Low
The engine control module has detected low oil pressure in the bank 1 hydraulic circuit responsible for cylinder deactivation. Below threshold pressure the lifters cannot collapse and the system disables further deactivation requests on bank 1.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: hard
Common causes
Ordered by how often each turns out to be the cause.
- Low engine oil levelCommon
- Oil pump worn or weakPossible
- Oil pressure switch reads lowPossible
Parts involved
- Oil Pump
- Oil Control Valve
- Oil Pressure Switch
P3468 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.