Courtesy of HONDA, U.S.A., INC.

Courtesy of HONDA, U.S.A., INC.

Courtesy of HONDA, U.S.A., INC.

Courtesy of HONDA, U.S.A., INC.

Courtesy of HONDA, U.S.A., INC.

The powertrain control module (PCM) detects a blockage on the vent line by two phases:

Phase 1
The fuel vapor containment valve is opened for a short time, and the VENT blockage is determined by the change in the tank internal pressure. If there is a pressure change in the tank, the PCM determines as normal. If there is no pressure change, there is a possibility that the VENT blockage failure or the pressure in the tank is not applied, the detection moves to phase 2.
Phase 2
If abnormality is found in phase 1, The PCM detects a blockage of vent line by estimating the volume of space in the evaporative emission (EVAP) system. Phase 2 is performed after the vehicle has stopped for a period of time, If the volume of space is large, the EVAP leak check module is closed and decompressed by purge. If the volume of space is small, the PCM detects a malfunction and stores a DTC.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

DTC P00FE: General Description