P3443

DTC P3443, sometimes indicated as P344300 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 low.

Symptoms of this code include a misfire or rough running engine.
There are a few things that could cause this code. One is a problem with the wiring or connector to the cylinder 6 intake valve actuator. Another is a problem with the actuator itself. A third possibility is a problem with the engine control module (ECM).
If you suspect a wiring or connector problem, check these items first. If the problem is with the actuator, it will need to be replaced. If the problem is with the ECM, a software update may be needed.

• P3443: Cylinder 6 Deactivation/Intake Valve Control Circuit Low
• P3443: Deactivation/intake valve control, cylinder 6 – circuit low
• P3443 00: Deactivation/intake valve control, cylinder 6 - circuit low