Circuit/System Description
WARNING: This page is about a different variant/trim than selected.
This DTC tests the evaporative emission (EVAP) system for a restricted or blocked EVAP vent path that would cause excess amounts of vacuum to be developed in the EVAP system. With the purge valve open and the canister vent valve open, if the EVAP system vacuum goes above a calibrated threshold, the test will fail.
| Fuel Tank Pressure Sensor Signal Voltage | Fuel Tank Pressure |
|---|---|
| Less than 1.5 V | Positive Pressure |
| More than 1.5 V | Negative Pressure/Vacuum |