Code result
P34A3
Cylinder 12 Deactivation/Intake Valve Performance
Moderate severity
What it means
Per-cylinder intake valve deactivation on cylinder 12 does not respond as 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
Actuator stuck mechanically
highOne of the most commonly reported causes for this code — check this first.
Related help
Get the full diagnosis
Add your vehicle and see step-by-step repair help, recalls, and TSBs in Wrenchify.
Diagnose P34A3 freeNo credit card required