Powertrain, generic (extended)

P2DFD EVAP System Purge Pump Performance

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modeNo

Some turbocharged and hybrid engines cannot count on intake vacuum to empty the charcoal canister, so an electric purge pump moves the fuel vapour into the intake. P2DFD means this pump does not achieve the expected effect, for instance the pressure or speed it should reach. Nissan uses the code on the 2022 Rogue with the KR15DDT engine: bulletin NTB22-066 has the technician reseat the pump connector under the intake tube and run the engine for a minute before any further diagnosis. Hyundai names P2DFD00 among the codes linked to EGR condensation and intake icing on Tucson and Santa Fe hybrids, addressed by an ECM update (26-01-081H), and keeps its own code P1DFD00 for pump target speed. A Continental patent uses a pressure sensor in the pump module for plausibility checks. CARB demands purge flow monitoring.

Likely causes

Pump connector not fully latched (Nissan Rogue 2022)
Purge pump motor or impeller worn, pump no longer reaches its speed or pressure
Purge hose cracked, disconnected or blocked between canister, pump and intake
Condensation or ice in the intake path, needs ECM update (Hyundai hybrids)

Symptoms

  • MIL on, usually without noticeable change in driving
  • EVAP readiness not complete, emissions inspection may fail
  • Occasional fuel smell when the canister is not purged

Repair estimate

DifficultyMediumDIY possible
Parts and labour€20–500
Time0.3–2 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

evap purge pumpevap canister

Related codes

U02BBP0441P0496P0497P0443

References: static.nhtsa.gov, static.nhtsa.gov, image-ppubs.uspto.gov, law.cornell.edu.