Code result
P340A
Deactivation/Intake Valve Control Circuit Bank 1
Moderate severity
What it means
Generic electrical fault on the cylinder deactivation/intake valve control circuit on bank 1. The mechanism that switches off intake valves on selected cylinders cannot be commanded.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Deactivation solenoid failed
highOne of the most commonly reported causes for this code — check this first.
Wiring break or unplugged connector
mediumA plausible cause — test and verify before replacing parts.
Related help
Get the full diagnosis
Add your vehicle and see step-by-step repair help, recalls, and TSBs in Wrenchify.
Diagnose P340A freeNo credit card required