OBD-II code · Powertrain (manufacturer / generic)
P340B Deactivation/Intake Valve Control Circuit Bank 2
Generic electrical fault on the cylinder deactivation/intake valve control circuit on bank 2.
Is it safe to drive with P340B?
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
- PossibleWiring break or unplugged connector
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1.5–6 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Cylinder Deactivation Solenoid, Actuator Wiring
Related codes
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.