EVAP Control System Monitor

OBD System Description - EVAP Control System Monitor

System Description / Monitoring Procedure
Refer to EVAP Leak Check System Description.

DTC Description / Detecting Condition / Confirmation Procedure

P0441
Refer to DTC P0441: Evaporative Emission System Incorrect Purge Flow. P0441

P0456
Refer to DTC P0456: Evaporative Emission System Leak Detected (Very Small Leak). P0456

P1420, P1421
Refer to DTC P1420 / P1421: Evaporative Emission System Vent Valve Stuck Open / Closed. P1420 P1421

P1422
Refer to DTC P1422: Evaporative Emission System Leak Detect Pump Stuck OFF. P1422

P1424, P1425
Refer to DTC P1424 / P1425: Evaporative Emission System Leak Detection Pump Flow High / Low. P1424 P1425

Operation:

Enable Conditions:

Typical Malfunction Thresholds:

EVAP Control System Monitor