Code Definition

P1444 — Purge Volume Control Valve

System: Powertrain  |  Type: Manufacturer-Specific  |  Make: Infiniti

About P1444

P1444 is a manufacturer-specific powertrain diagnostic trouble code recorded for Infiniti vehicles. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

P1444 is a manufacturer-specific code. The same code string on a different make may have a different meaning. Always confirm the code's definition against the vehicle's service information for the specific make and model under test.

Code Information

The EVAP canister purge volume control solenoid valve meters how much fuel vapour is drawn from the charcoal canister into the intake manifold, and it is operated electrically by the Engine Control Module (ECM). On these Nissan and Infiniti vehicles the ECM controls the valve with a signal to set purge flow according to engine conditions. DTC P1444 is set when the ECM detects an improper voltage in the purge volume control valve circuit, pointing to an open circuit, a short or a failed valve winding rather than a flow or leak fault. Because purge is affected, symptoms can include rough idle wh...

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