P3444

DTC P3444, sometimes indicated as P344400 is an OBD diagnostic trouble code indicating a manufacturer-specific fault with the vehicle powertrain (i.e. engine and gearbox). This code identifies an error with the auxiliary emissions system causing cylinder 6 deactivation/intake valve control circuit high.

This code is set when the PCM detects that the intake valve control circuit for cylinder 6 is high. This can be caused by a number of things, including a bad valve, a wiring issue, or a problem with the PCM itself.
If this code is set, first check for any obvious problems with the engine, such as a misfire. If there is a misfire, it will need to be fixed before any other codes can be addressed.
If there is no misfire, then check the wiring and connectors for the intake valve control circuit for cylinder 6. If there is any damage or corrosion, it will need to be fixed.
If the wiring and connectors are OK, then the next step is to test the valve itself. If the valve is bad, it will need to be replaced.
If all of the above steps have been checked and no problems have been found, then the PCM may need to be replaced.

• P3444: Cylinder 6 Deactivation/Intake Valve Control Circuit High
• P3444: Deactivation/intake valve control, cylinder 6 – circuit high
• P3444 00: Deactivation/intake valve control, cylinder 6 - circuit high