Lotus Evora. Instruction

Lotus Service Notes

Section EMR

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

Lotus Evora. Instruction - part 29