OBD-II code · Powertrain (manufacturer / generic)
P3496 Cylinder 12 Deactivation
The engine control module has detected a fault in the cylinder 12 deactivation system. Found on V12 engines with cylinder deactivation.
Is it safe to drive with P3496?
Usually safe for short trips, but don’t ignore it: the underlying fault can get more expensive over time.
Common causes
- Most likelyDeactivation solenoid failed
- PossibleLifter stuck
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 2–10 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Cylinder Deactivation Solenoid, Lifter, Engine Wiring Harness
Related codes
- P3457Cylinder 7 Deactivation
- P3465Cylinder 8 Deactivation
- P3473Cylinder 9 Deactivation
- P3481Cylinder 10 Deactivation
- P3489Cylinder 11 Deactivation
- P3493Cylinder Deactivation Position Sensor Bank 2
- P3494Cylinder Deactivation Position Sensor Bank 1 Range/Performance
- P3495Cylinder Deactivation Position Sensor Bank 2 Range/Performance
- P3497Cylinder Deactivation System Bank 2
- P3498Cylinder Deactivation Pressure Sensor Bank 1
- P3499Cylinder Deactivation Pressure Sensor Bank 2
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.