P3445Cylinder 6 Exhaust Valve Control Circuit/Open
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- How the car detects it
- P3445 is defined for a break in the wiring of a stand-alone actuator that would control the exhaust valves of cylinder 6. No manufacturer documents this code publicly. The engines that deactivate cylinder 6 today, GM's AFM and DFM V8s and Chrysler's Hemi with MDS, publish only intake-side codes for this cylinder (P3441, and at GM also P3443 and P3444). NHTSA's description of GM's DFM hardware explains why: a single solenoid per cylinder sends oil to the intake and the exhaust lifters alike, which then unlock one after the other. An engine with its own exhaust-side actuators would have to check their wiring for continuity under CARB's rules for output components, and that is the fault this code names. P3446 to P3448 complete the exhaust group.
- What you may notice
- Check engine lamp on
- Cylinder deactivation disabled
- Likely causes
- PossibleBroken wire or loose connector at the cylinder 6 exhaust actuator
- PossibleActuator coil interrupted
- RareOutput stage in the control module faulty
- 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.