Code Definition

P1445 — Purge Volume Control Valve

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

About P1445

P1445 is a manufacturer-specific powertrain diagnostic trouble code recorded for Nissan 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.

P1445 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 valve on Nissan engines regulates how much fuel vapour is drawn from the charcoal canister into the intake manifold, with the Engine Control Module (ECM) commanding the valve to control purge flow. DTC P1445 indicates the ECM has detected a fault associated with the purge volume control valve circuit or its operation, such as the valve circuit being open or shorted or the valve not flowing as commanded. Because the purge valve influences the air fuel mixture, a fault can affect fuel trim as well as emissions. Common symptoms include the check engine light...

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