OBD-II code · Powertrain (manufacturer / generic)
P3472 Cylinder Deactivation Hydraulic Circuit Bank 2 Low
The engine control module has detected low oil pressure in the bank 2 hydraulic circuit responsible for cylinder deactivation. Below the calibrated threshold the switching lifters cannot collapse and cylinder deactivation on bank 2 is disabled until pressure recovers.
Is it safe to drive with P3472?
Usually safe for short trips, but don’t ignore it: the underlying fault can get more expensive over time.
Common causes
- Most likelyLow engine oil level
- PossibleOil pump worn or weak
- PossibleOil pressure switch reads low
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1.5–8 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Oil Pump, Oil Control Valve, Oil Pressure Switch
Related codes
- P3468Cylinder Deactivation Hydraulic Circuit Bank 1 Low
- P3469Cylinder Deactivation Hydraulic Circuit Bank 1 High
- P3470Cylinder Deactivation Hydraulic Circuit Bank 2 Open
- P3471Cylinder Deactivation Hydraulic Circuit Bank 2 Performance
- P3473Cylinder 9 Deactivation
- P3474Cylinder Deactivation Hydraulic Circuit Bank 2 High
- P3475Cylinder Deactivation Oil Pressure Switch Bank 1 Circuit
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.