P3499
Cylinder Deactivation Pressure Sensor Bank 2
The engine control module has detected a fault with the bank 2 cylinder deactivation pressure sensor. The analogue oil pressure sensor is used to verify the deactivation hydraulic state; a fault disables closed-loop deactivation control on bank 2.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: hard
Common causes
Ordered by how often each turns out to be the cause.
- Pressure sensor failedCommon
- Wiring or connector faultPossible
- Sensor port contaminated by sludgeLess likely
Parts involved
- Oil Pressure Sensor
- Engine Wiring Harness
- ECM
P3499 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.