A kinked, pinched, or crushed vapor hose between the fuel tank and the EVAP canister; A blocked or saturated EVAP canister restricting vapor flow through the tank vapor line; A stuck-closed or blocked fuel tank pressure relief or rollover valve; A blocked vapor line caused by debris, mud, or a spider nest in the vent path; A restricted or failed fuel tank pressure sensor giving false restriction readings; A stuck-closed EVAP vent solenoid or canister close valve preventing normal venting; A collapsed or internally deteriorated vapor line that looks fine from the outside

DTC codes / P00xx · Fuel and air metering and auxiliary emission controls / P00FE

P00FEEVAP System Tank Vapor Line Restricted/Blocked

Q: What does code P00FE mean?

EVAP System Tank Vapor Line Restricted/Blocked. P00FE means the engine computer has detected a restriction or blockage in the vapor line that carries fuel tank vapors toward the EVAP canister. The computer typically infers this from abnormal pressure behavior during a tank venting or purge self-test, not from a dedicated flow sensor.

P00FE means the engine computer has detected a restriction or blockage in the vapor line that carries fuel tank vapors toward the EVAP canister. The computer typically infers this from abnormal pressure behavior during a tank venting or purge self-test, not from a dedicated flow sensor.

SystemPowertrain

Code typeGeneric (all makes)

SeverityLow

Fix difficultyIntermediate

AreaFuel and air metering and auxiliary emission controls

Symptoms you may notice

Illuminated check engine light, often with no other symptoms besides the warning light
A slight fuel smell around the rear of the vehicle or near the fuel filler
Difficulty or unusual resistance when refueling, such as the pump nozzle clicking off early
A faint hiss or whoosh when removing the fuel cap, indicating tank pressure is not venting normally
Rough idle or stumble after refueling on some vehicles if the purge system is affected
Failed emissions inspection readiness for the EVAP monitor

Common causes, most likely first

A kinked, pinched, or crushed vapor hose between the fuel tank and the EVAP canister
A blocked or saturated EVAP canister restricting vapor flow through the tank vapor line
A stuck-closed or blocked fuel tank pressure relief or rollover valve
A blocked vapor line caused by debris, mud, or a spider nest in the vent path
A restricted or failed fuel tank pressure sensor giving false restriction readings
A stuck-closed EVAP vent solenoid or canister close valve preventing normal venting
A collapsed or internally deteriorated vapor line that looks fine from the outside

How to diagnose and fix it

Inspect the entire tank vapor line and EVAP hose routing for kinks, pinches, or physical damage
Check the fuel tank pressure sensor reading and compare it to expected values during a vent test
Command the EVAP vent solenoid and canister close valve with a scan tool to confirm they open and close
Perform a smoke test on the EVAP system to look for blockages as well as leaks
Disconnect the vapor line at both ends and check for flow by blowing low-pressure air through it
Inspect and test the fuel tank pressure relief and rollover valves for sticking or blockage
Replace the restricted vapor line or blocked component, then clear codes and run the EVAP monitor to verify

Why a blocked vapor line is often misdiagnosed

A restriction in the tank vapor line can mimic a large EVAP leak because the computer sees pressure that will not bleed off during a vent test.
Many technicians replace the canister or purge valve first, but a pinched rubber hose above the fuel tank is a common and easily overlooked cause.
The code can set from a spider nest or mud dauber plugging the vent filter or line, especially on vehicles parked outdoors for long periods.
A fuel tank pressure sensor that reads slightly off can trigger P00FE without any actual blockage, so always compare sensor values to a mechanical gauge.
After refueling, a blocked vapor line can pressurize the tank and cause the engine to run rich briefly when the purge valve opens.

Can I keep driving with P00FE?

The vehicle is generally safe to drive with P00FE because it does not affect engine operation or safety systems, but avoid topping off the fuel tank and address the fault soon to prevent EVAP system damage and emissions test failure.

Tools that help

Tools we recommend are in the Auto Veteran shop on Amazon. As an Amazon Associate we earn from qualifying purchases.

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.