Lotus Evora - Evaporative Emission Control - Purge, Open; Closed Circuit

Lotus Service Notes Section EMR
Page 45
Evaporative Emission Control – Purge, Open / Closed Circuit
P0444 Evaporative Emission System Purge Control Valve Circuit Open
P0445 Evaporative Emission System Purge Control Valve Circuit Closed
P0446 Evaporative Emission System Vent Control Circuit
P0447 Evaporative Emission System Vent Control Circuit Open
P0448 Evaporative Emission System Vent Control Circuit Closed
P0451 Evaporative Emission System Pressure Sensor/Switch Range/Performance
P0452 Evaporative Emission System Pressure Sensor/Switch Low
P0453 Evaporative Emission System Pressure Sensor/Switch High
Description
When the engine is running the ECU continuously monitors the status of the evaporative emission components
for open circuit or short. The feedback signal should be low when turned ON and high when turned OFF. The
following codes will be set if the above conditions are not met.
P0444, P0445
Sensor / component connections
Purge Solenoid
Connector Pins Description ECU Pin ECU Connector
1 Battery Voltage - -
2 Solenoid Output B3 48 Way (Centre)
Potential failure modes:
• P0444 Purge valve/wiring open circuit
• P0445Purgevalveshortcircuit
Diagnostic mask:
• The MIL will be illuminated if these faults are present for 2 consecutive trips.
2009/02