Monitored & Set Conditions

This code is monitored with the engine running. Fuel level greater than 12 percent. Ambient temperature between 39-89°F (4-32°C). The code is set when the PCM does not see the NVLD switch close during the medium/large leak test. The PCM will then increase the vacuum supply to the EVAP system by increasing flow through the EVAP purge valve. If the switch does not close with an increase in vacuum, an error is detected. This is a two trip fault.