OBD-II code · Powertrain (manufacturer / generic)
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.
Is it safe to drive with P3499?
Usually safe for short trips, but don’t ignore it: the underlying fault can get more expensive over time.
Common causes
- Most likelyPressure sensor failed
- PossibleWiring or connector fault
- Less likelySensor port contaminated by sludge
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–4 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Oil Pressure Sensor, Engine Wiring Harness, Ecm
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.