P3417Cylinder 3 Deactivation/Intake Valve Control Circuit/Open
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- How the car detects it
- P3417 flags a broken path in the drive circuit of the cylinder 3 deactivation solenoid. GM documents it twice: its 2007 Displacement on Demand table covers solenoid circuits on cylinder 1, 3 and 5 and needs 30 bad readings in 100 with the engine turning faster than 800 rpm; for the 2019 DFM engine L84, the ECM expects over 200 kohm whenever its low-side output rests, 20 of 25 checks, Type B. That controller also watches a high-side driver for the same solenoid under separate codes, and GM warns that P3419 may appear alongside. The LTA and LT2 V8s also put cylinder 3 to rest, together with 2, 5 and 8 (bulletin 20-NA-038). As long as the circuit is open, every cylinder keeps firing.
- What you may notice
- Check engine lamp on
- Reduced-cylinder mode no longer engages
- Slightly higher fuel consumption
- Likely causes
- LikelyBroken or chafed wire between control module and cylinder 3 solenoid
- PossibleOpen winding in the cylinder 3 deactivation solenoid
- PossibleLoose, oily or corroded solenoid connector
- RareFailed output stage in the engine control module
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Often possible to do yourself.Typical cost: €60 – €900
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.