Powertrain
Definition only
Lights the check engine lamp
P340B: Deactivation/Intake Valve Control Circuit Bank 2
Standardized SAE J2012 code · P34xx codes
What does P340B mean?
Generic electrical fault on the cylinder deactivation/intake valve control circuit on bank 2.
The code tells you which monitor failed, not which part is broken. Test before replacing parts.
Common causes
- High Deactivation solenoid failed
- Medium Wiring break or unplugged connector
Likelihood is a general estimate across vehicles; your make and model may differ.
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