P3441Cylinder 6 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
- Cylinder 6 belongs to both classic V8 deactivation groups, so P3441 is a code that real engines set. On GM V8s with Active Fuel Management, which park cylinders 1, 7, 6 and 4, the 2019 tables list it for the L86 truck engine and the LT4 Corvette: with the low-side driver off, more than 200 kohm between output and ground counts as an open, and 20 failures in 25 samples (every 250 ms, from 400 rpm) store a Type B code. The L84 with Dynamic Fuel Management runs the same check from 425 rpm. Chrysler names P3441 for the 5.7 L Hemi with MDS; a STAR case blames a heat shield rubbing through the solenoid harness. Shorts on this circuit are P3443 and P3444.
- What you may notice
- Check engine lamp on
- Engine no longer drops to four-cylinder mode
- Possibly circuit codes for cylinders 1, 4 and 7 as well if the shared harness is damaged
- Likely causes
- LikelySolenoid harness broken or chafed through (on the 5.7 L Hemi by the manifold heat shield)
- PossibleOpen coil in the cylinder 6 deactivation solenoid
- PossibleLoose or corroded connector at the cylinder 6 solenoid
- RareControl module software that needs an update (Chrysler TSB 18-002-25)
- 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.