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TuningBot DTC Database · v4.37.15

P1456 Nissan - Evaporative emission (EVAP) canister purge system - very small leak

Manufacturer-specific interpretation for Nissan. All interpretations of P1456

P · PowertrainEmissionsOBD2

What P1456 means

P1456
Evaporative emission (EVAP) canister purge system - very small leak Nissan · emissions Data confidence 62%

The control module detected a condition consistent with a leak affecting the Evaporative emission (EVAP) canister purge system - very small. This is the manufacturer-specific definition used by Nissan.

Possible causes

  • Wiring
  • fuel tank/cap
  • hose leak/blockage
  • EVAP valve/canister
  • EVAP vent valve
  • BARO sensor

Related and nearby codes

How to read P1456

P

Powertrain: engine, transmission and driveline systems.

1

Manufacturer-defined range: the meaning can differ between brands.

456

Specific fault index within the subsystem.

Frequently asked questions about P1456

What does P1456 mean?

Evaporative emission (EVAP) canister purge system - very small leak. The control module detected a condition consistent with a leak affecting the Evaporative emission (EVAP) canister purge system - very small. This is the manufacturer-specific definition used by Nissan.

Is P1456 generic or manufacturer-specific?

P1456 is a manufacturer-specific code. In this database it is documented for: Nissan. The same number can mean something different on other brands.

Can TuningBot remove P1456 at file level?

If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry. Checksum correction is not included: it is a separate, optional service. Not sure whether your case qualifies? Request a free assessment and our engineers will check your ECU file.

Other file services

ECU tuningStage 1 dyno results for Nissan engines See the results →

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