P2421

Evaporative Emission System Vent Valve Stuck Open

DTC P2421, sometimes indicated as P242100 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 evaporative emission system vent valve stuck open.

  • P2421: Evaporative Emission System Vent Valve Stuck Open
  • P2421: Evaporative emission (EVAP) vent valve – valve stuck open
  • P2421 00: Evaporative emission (EVAP) vent valve - valve stuck open

DTC Trouble Code Search
Bulletins

Bulletins are notices put out by manufacturers in conjunction with the NHTSA to notify the public of manufacturing issues or changes.

  • VIN4APIN20230912 - ELECTRICAL SYSTEM
    VOLKSWAGEN: Customer states mil-on, P2421 stored in ecm memory customer states mil-on, P2402 stored in ecm memory customer states rattle from below the vehicle customer states mil-on, fault P04F0 stored in ecm memory customer states mil-on, fault p
  • VIN4APIN20230824 - SEAT BELTS
    VOLKSWAGEN: Customer states mil-on, P2421 stored in ecm memory customer states mil-on, P2402 stored in ecm memory customer states rattle from below the vehicle customer states mil-on, fault P04F0 stored in ecm memory customer states mil-on, fault p
  • VIN4APIN20210121 - FUEL SYSTEM, OTHER
    VOLKSWAGEN: Customer states mil-on with P2421 customer states mil-on with misfire code customer states clutch pedal makes noise no crank, no start customer states no voice output during calls / micro phone inoperative customer states fuel odor/lea
  • VIN4APIN20210114 - EQUIPMENT
    VOLKSWAGEN: Customer states mil-on with P0556 customer states mil-on with P2421 customer states mil-on with misfire code customer states clutch pedal makes noise no crank, no start customer states no voice output during calls / micro phone inopera
  • VIN4APIN20210104 - EQUIPMENT
    VOLKSWAGEN: Customer states mil-on with P0556 customer states mil-on with P2421 customer states mil-on with misfire code customer states clutch pedal makes noise no crank, no start customer states no voice output during calls / micro phone inopera
  • VIN4APIN20201210 - ENGINE (PWS)
    VOLKSWAGEN: Customer states mil-on with P0556 customer states mil-on with P2421 customer states mil-on with misfire code customer states clutch pedal makes noise no crank, no start customer states no voice output during calls / micro phone inopera
  • VIN4APIN20201201 - ENGINE AND ENGINE COOLING:ENGINE:CRANK/CAMSHAFT POSITION SENSOR
    VOLKSWAGEN: Customer states mil-on with P0556 customer states mil-on with P2421 customer states mil-on with misfire code customer states clutch pedal makes noise no crank, no start customer states seat memory inoperative customer states fuel odor
  • VIN4APIN20201120 - POWER TRAIN:CLUTCH ASSEMBLY:PEDAL/HAND LEVER(MOTORCYCLE)
    VOLKSWAGEN: Customer states mil-on with P0556 "customer states mil-on with P11A1/P11A2/P11A3/P11A4/P11A5/P11A6/P11A7/P11A8/ P11A9/P11AA/P11AB/P11AC/P11AD/P11AE/P11AF/P11B0" customer states mil-on with P2421 customer states mil-on, hpfp mounting bol
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